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AKAKI Mitsuru
Center for Supports to Research and Education Activities
Associate Professor

Researcher basic information

■ Research Keyword
  • Solid state physics
  • Dielectricty
  • Magnetism
  • High magnetic field
  • Multiferroic
■ Research Areas
  • Natural sciences / Magnetism, superconductivity, and strongly correlated systems
■ Committee History
  • Apr. 2017 - Mar. 2018, 日本物理学会, 領域3 運営委員

Research activity information

■ Award
  • Dec. 2022 The Society of Electron Spin Science and Technology, 奨励賞, Study of electromagnons by pulsed high-field and multi-frequency ESR
    Mitsuru AKAKI

  • Oct. 2021 The Physical Society of Japan, Young Scientist Award of the Physical Society of Japan, パルス強磁場を用いた電気磁気効果の研究
    M. Akaki

■ Paper
■ MISC
  • Changes in Magnetoelectric Properties of CaBaM4O7(M=Co, Fe) Crystals through Their Twin-Structure Control
    荒井陽光, 白崎巧, 赤木暢, 黒江晴彦, 桑原英樹
    2023, 日本物理学会講演概要集(CD-ROM), 78(2) (2)

  • Magnetoelectric properties of ABaM4O7(A=(Ca,Sr), M=(Co,Fe,Mn)) crystals
    白崎巧, 遠藤颯, 松田啓太, 赤木暢, 黒江晴彦, 桑原英樹
    2021, 日本物理学会講演概要集(CD-ROM), 76(1) (1)

  • Control of oxygen content and hexagonally twinned structure of CaBaM4O7+δ(M = Co, Fe) single crystals.
    白崎巧, 遠藤颯, 松田啓汰, 小原啓輔, 赤木暢, 黒江晴彦, 桑原英樹
    2021, 日本物理学会講演概要集(CD-ROM), 76(2) (2)

  • Low dimensional magnetism of ytterbium insulator YbAgS2
    飯塚亮介, 道村真司, 道村真司, 青木優樹, 佐藤一彦, 小林拓矢, 谷口弘三, 髭本亘, 石崎嵩人, 山本隆文, 大山研司, 赤木暢, 大久保晋, 太田仁, 小坂昌史
    2021, 日本物理学会講演概要集(CD-ROM), 76(1) (1)

  • Electron spin resonance in CuFeO2 under external pressure
    赤木暢, 櫻井敬博, 安谷佳将, 竹原良祐, 木田孝則, 森川悦司, 鳴海康雄, 萩原政幸, 金道浩一, 木村尚次郎, 大久保晋, 太田仁
    2020, 日本物理学会講演概要集(CD-ROM), 75(2) (2)

  • 栗原 綾佑, 三宅 厚志, 徳永 将史, 赤木 暢, 萩原 政幸, 桑原 英樹
    Mar. 2019, 第74回日本物理学会講演概要集, 2, 2038 - 2038, Japanese
    Summary national conference

  • パルス強磁場を用いた圧力下ESR装置の開発
    櫻井敬博, 奥藤涼介, 赤木暢, 木田孝則, 萩原政幸, 大久保晋, 太田仁
    2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)

  • LC共振回路を用いた多重極限環境下物性測定装置の開発
    木田孝則, 二本木克旭, 田原大夢, 赤木暢, 鳴海康雄, 萩原政幸
    2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)

  • 鈴木哲平, 齋藤佑, 原茂生, 櫻井敬博, 大久保晋, 太田仁, 赤木暢, 鳴海康雄, 萩原政幸, 吉田紘行
    The Physical Society of Japan, 21 Sep. 2018, 日本物理学会講演概要集(CD-ROM), 73(2) (2), ROMBUNNO.9aPS‐65 - 513, Japanese

  • CaBaM4O7(M=(Co,Fe))単結晶の磁場(電場)誘起電気分極(磁化)の極性依存性 II
    野田正亮, 赤木暢, 黒江晴彦, 桑原英樹
    21 Sep. 2018, 日本物理学会講演概要集(CD-ROM), 73(2) (2), ROMBUNNO.9aPS‐101, Japanese

  • 赤木暢, ROMHANYI J, PENC K, 萩原政幸
    The Physical Society of Japan, 21 Sep. 2018, 日本物理学会講演概要集(CD-ROM), 73(2) (2), ROMBUNNO.10aB204‐3 - 1506, Japanese

  • ベンゾチアゾールおよび縮環ピロールからなる2座配位子を有する単核四面体型Co(II)錯体の遅い磁気緩和
    石崎聡晴, 鹿毛悠冬, 神岡美咲, 福田貴光, 赤木暢, 清水宗治, 萩原政幸, 古田弘幸, 石川直人
    10 Jul. 2018, 錯体化学会討論会講演要旨集, 68th, 216, Japanese

  • 赤木暢, 吉澤大智, 奥谷顕, 木田孝則, ROMHANYI J, PENC K, 萩原政幸
    The Physical Society of Japan, 23 Mar. 2018, 日本物理学会講演概要集(CD-ROM), 73(1) (1), ROMBUNNO.25aK304‐1 - 1172, Japanese

  • マイクロ波領域におけるCsCuCl3の磁気キラル二色性 II
    中川直己, 阿部伸行, 近江毅志, 木村尚次郎, 赤木暢, 萩原政幸, ZACCARRO J, GAUTIER‐LUNEAU I, LUNEAU D, 高阪勇輔, 井上克也, 秋光純, 徳永祐介, 有馬孝尚
    23 Mar. 2018, 日本物理学会講演概要集(CD-ROM), 73(1) (1), ROMBUNNO.25aK503‐8, Japanese

  • CaBaM4O7(M=Co,Fe)単結晶の磁場(電場)誘起電気分極(磁化)の極性依存性
    野田正亮, 小田涼佑, 赤木暢, 黒江晴彦, 桑原英樹
    23 Mar. 2018, 日本物理学会講演概要集(CD-ROM), 73(1) (1), ROMBUNNO.22pPSA‐48, Japanese

  • Sawada Yuya, Nomoto Tetsuya, Okutani Akira, Akaki Mitsuru, Narumi Yasuo, Matan Kittiwit, Hagiwara Masayuki
    The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73(0) (0), 608 - 608, Japanese

  • High field and high frequency ESR of the strongly frustrated S=1/2 dimerized magnet Ba2CoSi2O6Cl2
    栗田伸之, 赤木暢, 奥谷顕, 萩原政幸, 田中秀数
    02 Nov. 2017, 電子スピンサイエンス学会年会講演要旨集, 56th, 42‐43, Japanese

  • Electric spin dipole resonance in the spin gap system KCuCl3
    木村尚次郎, 松本正茂, 赤木暢, 萩原政幸, 金道浩一, 田中秀数
    02 Nov. 2017, 電子スピンサイエンス学会年会講演要旨集, 56th, 46‐47, Japanese

  • Minoru Soda, Shohei Hayashida, Toshiya Yoshida, Mitsuru Akaki, Masayuki Hagiwara, Maxim Avdeev, Oksana Zaharko, Takatsugu Masuda
    Jun. 2017, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(6) (6), 064703 - 064703, English
    [Refereed]

  • 萩原政幸, 赤木暢, 木田孝則, 鳴海康雄

    大阪大学先端強磁場科学研究センターでは、平成２１年度から二度にわたってコンデンサーバンクシステムの更新を行い、今年度より全国共同利用を開始した。これらのシステム及び超伝導マグネットを用いた主に磁性体研究のための装置開発の現状と将来計画について報告する。

    The Physical Society of Japan, 21 Mar. 2017, 日本物理学会講演概要集(CD-ROM), 72(1) (1), ROMBUNNO.17pC‐PS‐32 - 1110, Japanese

  • 多目的パルス強磁場実験装置開発と強相関電子系への応用
    鳴海康雄, 木田孝則, 赤木暢, 萩原政幸
    21 Mar. 2017, 日本物理学会講演概要集(CD-ROM), 72(1) (1), ROMBUNNO.20aC‐PS‐35, Japanese

  • 高強度遠赤外光源を用いた圧力下電子スピン共鳴装置の開発
    高田篤, 木田孝則, 赤木暢, 櫻井敬博, 大木瑛登, 太田仁, 光藤誠太郎, 藤井裕, 小川勇, 出原敏孝, 萩原政幸
    21 Mar. 2017, 日本物理学会講演概要集(CD-ROM), 72(1) (1), ROMBUNNO.17pC‐PS‐30, Japanese

  • NMR study on the quasi one-dimensional antiferromagnet BaCo2Si2O7 III
    Uesugi R, Akaki M, Hagiwara M, Kuwahara H, Goto T
    <p>1次元磁性体BaCo_2_Si_2_O_7_は、二価のCoイオンを含み、CoO_4_四面体がc軸方向に一次元鎖を形成していることが知られており、TN=21K以下で弱強磁性をともなったIsing型反強磁性体であるといわれている。さらに、容易軸に磁場印加すると、14T付近で大きな磁化ジャンプが見られ、これは大きな磁気異方性のためであると思われている。我々は、^29^Siと^59^CoのNMRで得られたスペクトル解析を用いて、ミクロな磁性について研究した。</p>
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72(0) (0), 1120 - 1120, Japanese

  • Pulsed high-field ESR in Ca2CoSi2O7
    Akaki M, Hagiwara M
    <p>オケルマナイト構造を持つA_2_CoB_2_O_7_（A=Ca,Sr,Ba,B=Si,Ge）は磁気誘起の電気分極を持つマルチフェロイック物質である。低温で超格子構造を持つCa_2_CoSi_2_O_7_は異方性が小さく、c軸方向に磁場印加時に20-50Tの範囲で飽和磁化の85%程度の磁化プラトーを持つなど特異な磁化過程を示す。本研究では、Ca_2_CoSi_2_O_7_において電子スピン共鳴実験から、その電気磁気特性を調べた。</p>
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72(0) (0), 1129 - 1129, Japanese

  • Change of Magnetoelectric Properties induced by Magnetic Phase Transition in CaBaM4O7(M=Co,Fe) Single Crystals II
    Oda R, Noda M, Ebukuro Y, Noda T, Akaki M, Kuroe H, Kuwahara H
    <p>CaBaCo_4_O_7_とCaBaFe_4_O_7_は同じ空間群に属し、室温で自発電気分極を持ち、64K(Co),275K(Fe)で異なる磁気構造を持つフェリ磁性転移が起きる。この磁気転移に伴って電気分極の変化が生じるが、そのメカニズムは明らかでない。本研究ではCaBaM_4_O_7_(M=Co,Fe)単結晶を作製し、磁気転移に伴う結晶構造の変化や、異方性を考慮した電場（磁場）下における磁化（電気分極）を調べ、両者を比較した結果を報告する。</p>
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72(0) (0), 1130 - 1130, Japanese

  • High field and high frequency ESR measurement of the fully frustrated dimerized quantum magnet Ba2CoSi2O6Cl2
    Kurita N, Akaki M, Okutani A, Hagiwara M, Tanaka H
    <p>Ba2CoSi2O6Cl2は、我々のグループで開拓を行った新規S=1/2スピンダイマー系磁性体である。これまで単結晶を用いた強磁場磁化測定及び非弾性中性子散乱測定を行い、それぞれ飽和磁化の1/2 に階段状の磁化プラトーを示すこと及び磁気励起に分散が全くないことを明らかにしてきた。これらの結果は、ダイマー間相互作用にほぼ完全なフラストレーションが存在し、臨界磁場以上でマグノンが量子結晶化していることを示している。今回我々はパルスマグネットと遠赤外分子レーザーを用いたBa2CoSi2O6Cl2の強磁場高周波電子スピン共鳴測定を行ったので、その結果について報告を行う。</p>
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72(0) (0), 1073 - 1073, Japanese

  • Ono T, Hagiwara M, Yamaguchi H, Hosokoshi Y, Kasatani K, Asai S, Souda M, Masuda T, Matsuo A, Kindo K, Okutani A, Akaki M
    <p>三方晶の結晶構造を持つBa2NiTeO6は、ab面内でNiイオンが二重層状の三角格子を組んでいるとともに、同一三角格子面内と別の三角格子面間の相互作用を両方考えると、この系は次近接相互作用の強いハニカム格子反強磁性体と見なせることがわかってきた。現在、この系で予想される磁場中相転移を探索すべく強磁場物性を調べているので、これまでの成果を報告する。</p>
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 790 - 790, Japanese

  • Oda R, Kajihara R, Nishina K, Akaki M, Kuroe H, Kuwahara H
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 1031 - 1031, Japanese

  • Soda Minoru, Yoshida Toshiya, Akaki Mitsuru, Hagiwara Masayuki, Zaharko Oksana, Avdeev Maxim, Itoh Shinichi, Yokoo Tetsuya, Masuda Takatsugu
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 1032 - 1032, Japanese

  • Uesugi R, Akaki M, Hagiwara M, Kuwahara H, Goto T
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 1033 - 1033, Japanese

  • Sera M, Nozue Y, Kimura T, Kimura K, Akaki M, Hagiwara M, Miyake A, Tokunaga M, Matsuo A, Kindo K, Nakano T

    我々が開発したS = 1⁄2カイラル反強磁性体A (TiO)Cu_4_(PO_4_)_4_ (A = Ba, Sr)は、どちらも磁気秩序化に伴う誘電異常を示す興味深い系である。今回、強磁場下における両物質の振る舞いを明らかにするために、磁化を中心とする物性測定を行ったので報告する。

    一般社団法人 日本物理学会, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 1849 - 1849, Japanese

  • Kida T, Tahara T, Ohashi S, Akaki M, Hagiwara M
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 1277 - 1277, Japanese

  • Akaki M, Aoki Y, Okutani A, Yoshizawa D, Kida T, Hagiwara M
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 1282 - 1282, Japanese

  • Atsushi Miyake, Jumpei Shibuya, Mitsuru Akaki, Hidekazu Tanaka, Masashi Tokunaga
    Sep. 2015, PHYSICAL REVIEW B, 92(10) (10), 100406 - 100406, English
    [Refereed]

  • ハイブリッドマグネットで作動する比熱測定装置の開発
    小濱芳允, 望月健生, 赤木暢, 金道浩一
    2015, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 2014

  • Akaki M, Okutani A, Yoshizawa D, Kuwahara H, Hagiwara M
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 1072 - 1072, Japanese

  • Kajihara R, Nishina K, Oda R, Akaki M, Kuwahara H
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 2442 - 2442, Japanese

  • Yoshizawa D, Morioka T, Akaki M, Fujimura A, Yasui Y, Hagiwara M
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 989 - 989, Japanese

  • Sera M, Kimura K, Akaki M, Hagiwara M, Nakano T, Nozue Y, Kimura T
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 996 - 996, Japanese

  • Kajihara R, Nishina K, Oda R, Akaki M, Kuroe H, Kuwahara H
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 2442 - 2442, Japanese

  • Nishina K, Kajihara R, Oda R, Akaki M, Kuroe H, Itatani K, Kuwahara H
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 2157 - 2157, Japanese

  • Aoki Y, Akaki M, Kida T, Okutani A, Yoshizawa D, Morioka T, Hagiwara M
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 2158 - 2158, Japanese

  • パルス強磁場下におけるFe1+y(Te1-xSx)の磁気弾性効果の研究
    河智史朗, 木原工, 赤木暢, 小濱芳允, 近藤晃弘, 三宅厚志, 徳永将史, 濱田健太朗, 水口佳一, 三浦大介, 高野義彦
    2014, 日本物理学会講演概要集, 69(1) (1)

  • 27aAF-8 Crystal structure and high-field magnetization process of the distorted kagome antiferromagnet volborthite Cu_3V_2O_7(OH)_2・2H_2O
    Ishikawa H, Hiroi Z, Okamoto Y, Akaki M, Miyake A, Yoshida M, Yamaura J, Kumai R, Murakami Y, Tokunaga M
    一般社団法人 日本物理学会, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 470 - 470, Japanese

  • Akaki M., Kohama Y., Kuwahara H., Matsuo A., Kindo K., Tokunaga M.
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 491 - 491, Japanese

  • Kawachi S., Miura D., Takano Y., Kihara T., Akaki M., Kohama Y., Kondo A., Miyake A., Tokunaga M., Hamada K., Mizuguchi Y.
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 574 - 574, Japanese

  • 27pPSA-71 Magneto-electric Effects of CsCuCl_3 in Pulsed-High Magnetic Fields II
    Shibuya J, Akaki M, Miyake A, Tokunaga M, Tanaka H
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 579 - 579, Japanese

  • 7aBJ-2 High field magneto-electric effects of BiFeO_3 single crystals grown by the LD-FZ technique
    Tokunaga M, Akaki M, Miyake A, Ito T, Kuwahara H, Miyahara S, Furukawa N
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 326 - 326, Japanese

  • Shibuya J., Akaki M., Kohama Y., Miyake A., Tokunaga M., Tanaka H.
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 327 - 327, Japanese

  • 9aPS-37 Impurity-Doping Effect on Magnetic and Dielectric Properties of CaBaCo_4O_7 Crystals
    Nishina K, Kajihara R, Murakami Y, Kano N, Akaki M, Kuwahara H
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69(0) (0), 412 - 412, Japanese

  • パルス強磁場下における反強磁性Fe1+yTe1-xSxの磁気抵抗測定
    河智史朗, 赤木暢, 小濱芳允, 徳永将史, 濱田健太朗, 水口佳一, 三浦大介, 高野義彦
    2013, 日本物理学会講演概要集, 68(1) (1)

  • 27pXY-10 Second order magnetoelectric effect in Ca_2CoSi_2O_7 crystal
    Akaki M, Tokunaga M, Kuwahara H
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 660 - 660, Japanese

  • Kawachi S., Akaki M., Kohama Y., Tokunage M., Hamada K., Mizuguchi Y., Miura D., Takano Y.
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 711 - 711, Japanese

  • Magneto-electric Effects of CsCuCl_3 in Pulsed-High Magnetic Fields
    Shibuya J, Akaki M, Miyake A, Tokunaga M, Tanaka H
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 373 - 373, Japanese

  • Anisotropic Magnetoelectric properties of CaBaCo_4O_7 single crystal II
    Kano N, Akaki M, Kuwahara H
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 373 - 373, Japanese

  • 25aAF-7 Magnetic field-temperature phase diagram of multiferroic material (Cu,Zn)_3Mo_2O_9
    Hachiuma S, Ito T, Eisaki H, Hosaka T, Ito R, Akaki M, Kuwahara H, Kuroe H, Sekine T, Hase M, Oka K
    The Physical Society of Japan, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 508 - 508, Japanese

  • 25aPS-44 Magnetic relaxor in ordered-perovskite RBaMn_2O_6 introduced local disorder
    Idei Y, Akaki M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 603 - 603, Japanese

  • 25aPS-48 Colossal magnetoresistance induced by B-site substitution for Nd_<0.45>Sr_<0.55>MnO_3
    Mashimo S, Nakamura M, Akaki M, Kuwahara H
    The Physical Society of Japan, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 604 - 604, Japanese

  • 26pAD-5 Electronic structuter in Sr_3Fe_<2-x>Co_xO_<7-δ>
    Naito R, Ikenaga H, Kumigasira H, Sakai E, Saitoh T, Nakano Y, Okawa M, Wadachi D, Nakamura R, Tozawa J, Akagi N, Kuwahara H, Sugiyama T
    一般社団法人 日本物理学会, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 810 - 810, Japanese

  • 18aPSA-26 Change of magnetic properties by substitution for Fe-site in Fe_2Mo_3O_8
    Watanabe T, Akaki M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 384 - 384, Japanese

  • 25aED-7 High-magnetic-field dependence of the electric polarization in Sr_2CoSi_2O_7 crystal
    Akaki M, Ehara M, Iwamoto H, Oka K, Tokunaga M, Kuwahara H
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 522 - 522, Japanese

  • 25pPSB-72 Magnetoelectric properties in 3d transition metal oxide wish tetrahedral structure
    Iwamoto H, Ehara M, Akaki M, Kuwahara H
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 581 - 581, Japanese

  • 25pPSB-73 Change of physical properties of Sr_3Fe_<2-x>Co_xO_<7-δ> by the control of oxygen vacancy II
    Nakamura R, Tozawa J, Akaki M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 581 - 581, Japanese

  • Kuroe H., Eisaki H., Hosaka T., Hachiuma S., Sekine T., Akagi M., Kuwahara H., Hase M., Oka K., Ito T.
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 393 - 393, Japanese

  • 21pGB-8 Temperature change of the spin driven electric polarization in Sr_2CoSi_2O_7 crystal under high-magnetic-field
    Akaki M, Ehara M, Iwamoto H, Kihara T, Tokunaga M, Kuwahara H
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 473 - 473, Japanese

  • 22aPS-61 x dependence of the anisotropic magneto-transport properties of Sr_3Fe_<2-x>Co_xO_<7-δ> single crystals
    Nakamura R, Tozawa J, Akaki M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 523 - 523, Japanese

  • 22aPS-62 Anisotropies Magnetoelectric property of CaBaCo_4O_7 single crystal
    Iwamoto H, Tadokoro T, Ehara M, Akaki M, Kuwahara H
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 523 - 523, Japanese

  • 20aPS-113 Magnetic characteristic change by Zn-substitution for Fe in Fe_2Mo_3O_8
    Nakayama S, Nakamura R, Akaki M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 546 - 546, Japanese

  • 20pPSA-45 Magnetoelectric effect in layered oxide CaBaCo_4O_7
    Ehara M, Onoue S, Hitomi M, Akaki M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 574 - 574, Japanese

  • 21aGF-6 Magnetoelectric Properties of TbBaMn_2O_<5+δ> Perovskite with Oxygen Vacancy
    Akaki M, Miyauchi Y, Ehara M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 597 - 597, Japanese

  • 23pHS-3 Measurement of Dielectric Constant in Magnetic Field of Distorted Triangular Lattice RbCoBr_3
    Nishiwaki Y, Kuroe H, Akaki M, Kuwahara H, Sekine T, Tokunaga M, Kato T
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 1013 - 1013, Japanese

  • 23aWJ-10 Substitution Effect of Rare Earth for Ba-site in Ordered-Perovskite RBaMn_2O_6
    Miyauchi Y, Akaki M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 456 - 456, Japanese

  • 24aPS-10 Neutron Scattering Study of Magnetic Structure of Nd_<0.33>Sr_<1.67>MnO_4
    Oohara Y, Kubota M, Akagi M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 555 - 555, Japanese

  • 24aPS-12 Control of orbital-ordered phases of heavily doped Nd_<1-x>Sr_xMnO_3 (x>0.5) by impurity substitution of B-site II
    Izuchi Y, Mashimo S, Akaki M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 556 - 556, Japanese

  • 24pXP-7 Change of magnetic properties by substitution of transition-metal in Fe_2Mo_3O_8
    Nakayama S, Watanabe T, Nakamura R, Akaki M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 576 - 576, Japanese

  • 25pWB-11 Effect of structural phase transition and disorder on the thermoelectric properties of Sr_<1-x>Ca_xTi_<1-y>Nb_yO_3 single crystals
    Fukuyado J, Narikiyo K, Okuda T, Akagi T, Kuwahara H
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 598 - 598, Japanese

  • Shindo Y., Hamasaki T., Kuroe H., Sekine T., Akagi M., Itatani S., Kuwahara H., Hase M.
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 467 - 467, Japanese

  • 27aTA-3 Control of electric polarization domain by 4f magnetic moment of rare earth in RMnO_3
    Akaki M, Hitomi M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 519 - 519, Japanese

  • 27pPSA-36 Control of ferroelectric phase by lattice randomness in orthorhombic RMnO_3
    Hitomi M, Ehara M, Akaki M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 575 - 575, Japanese

  • 28pTL-2 Charge/Orbital ordering in layered manganite Nd2-xSrMnO4 studied by soft X-ray scattering
    Kubota M, Oohara Y, Kotani Y, Ono K, Akagi M, Nakamura F, Fukushima S, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 621 - 621, Japanese

  • 28pTL-9 Temperature-dependent changes in ARPES spectra of layered Mn oxides
    Yoshizawa Noriki, Ono Kanta, Maeda Yasuhiro, Saitoh Tomohiko, Masa Akagi, Akahoshi Daisuke, Kuwahara Hideki, Aiura Yoshihiro, Kotani Yoshinori, Kubota Masato
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 623 - 623, Japanese

  • 26aPS-48 R-Site Randomness Effect in Ordered-Perovskite RBaMn_2O_6
    Miyauchi Y, Akaki M, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 488 - 488, Japanese

  • 26aPS-49 Control of orbital ordered phases of heavily doped Nd_<1-x>Sr_xMnO_3(x>0.5) by impurity substitution of B-site
    Izuchi Y, Iwamoto H, Akaki M, Akahoshi D, Itatani K, Kuwahara H
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 489 - 489, Japanese

  • 27aRL-3 Coexistence of ferroelectric phases (P//a and P//c) in Eu_<1-y>Y_yMnO_3(0.5
    Hitomi M, Ehara M, Akaki M, Kuroe H, Sekine T, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 536 - 536, Japanese

  • 26aXB-7 Femtosecond reflection spectroscopy in NdMnO_3
    Tanaka S, Kuwahara H, Miyata T, Okimoto Y, Kurashima M, Ishikawa T, Onda K, Koshihara S, Akaki M, Akahoshi D
    The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 633 - 633, Japanese

  • ARPESにおけるLa1.2Sr1.8Mn2O7のスペクトルの温度変化
    前田康博, 吉沢紀季, 齋藤智彦, 赤木暢, 赤星大介, 桑原英樹, 相浦義弘, 小谷佳範, 久保田正人, 小野寛太
    2009, PFシンポジウム要旨集, 26th, 202, Japanese

  • 軟X線共鳴散乱を用いた強相関電子系遷移金属酸化物の電荷・軌道秩序研究
    久保田正人, 大原泰明, 小谷佳範, 小野寛太, 赤木暢, 中村文暁, 福島瞬, 赤星大介, 桑原英樹
    2009, PFシンポジウム要旨集, 26th, 287, Japanese

  • Nd1-xSrxMnO3結晶の高ドープ域におけるB‐site不純物置換効果
    田先雷太, 福島瞬, 赤木暢, 山本啓太, 赤星大介, 桑原英樹
    The Physical Society of Japan (JPS), 25 Aug. 2008, 日本物理学会講演概要集, 63(2) (2), 531 - 531, Japanese

  • ペロブスカイト型酸化物における反射率の時間変化 II
    田先雷太, 幸山和晃, 赤木暢, 赤星大介, 江馬一弘, 桑原英樹
    The Physical Society of Japan (JPS), 29 Feb. 2008, 日本物理学会講演概要集, 63(1) (1), 579 - 579, Japanese

  • 斜方晶Eu0.8Y0.2MnO3結晶における弱強磁性強誘電状態
    赤木暢, 中村文暁, 赤星大介, 桑原英樹
    29 Feb. 2008, 日本物理学会講演概要集, 63(1) (1), 516, Japanese

  • Nd0.33Sr1.66MnO4の磁気構造
    大原泰明, 久保田正人, 赤木暢, 中村文暁, 福島瞬, 赤星大介, 桑原英樹
    29 Feb. 2008, 日本物理学会講演概要集, 63(1) (1), 641, Japanese

  • Hamasaki T., Kuroe H., Sekine T., Akaki M., Kuwahara H., Hase M.
    The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), 375 - 375, Japanese

  • 21pQF-2 B-site substitution effect of heavily doped Nd_<1-x>Sr_xMnO_3
    Tasaki R, Fukushima S, Akaki M, Yamamoto K, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), 531 - 531, Japanese

  • 24aPS-37 Time Dependence of Reflectivity of Perovskite Oxides II
    Tasaki R, Kouyama K, Akaki M, Akahoshi D, Ema K, Kuwahara H
    The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), 579 - 579, Japanese

  • 23aYB-2 Weak-ferromagnetic and ferroelectric state in orthorhombic Eu_<0.8>Y_<0.2>MnO_3 crystal
    Akaki M, Nakamura F, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), 516 - 516, Japanese

  • 26aYB-9 Neutron Diffraction Study of Magnetic Structure of Nd_<0.33>Sr_<1.66>MnO_4
    Oohara Y, Kubota M, Akaki M, Nakamura F, Fukushima S, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), 641 - 641, Japanese

  • Hamasaki T., Kuroe H., Sekine T., Akaki M., Kuwahara H., Hase M.
    The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), 375 - 375, Japanese

  • 斜方晶RMnO3のAタイプ反強磁性相近傍における強誘電相の外場制御 II
    中村文暁, 赤木暢, 野田耕平, 赤星大介, 桑原英樹
    The Physical Society of Japan (JPS), 21 Aug. 2007, 日本物理学会講演概要集, 62(2) (2), 537 - 537, Japanese

  • ペロブスカイト型酸化物における反射率の時間変化
    田先雷太, 幸山和晃, 赤木暢, 赤星大介, 江馬一弘, 桑原英樹
    The Physical Society of Japan (JPS), 21 Aug. 2007, 日本物理学会講演概要集, 62(2) (2), 536 - 536, Japanese

  • 低次元磁性体Ca2CoSi2O7結晶における磁場誘起焦電性
    赤木暢, 中村文暁, 赤星大介, 桑原英樹
    The Physical Society of Japan (JPS), 21 Aug. 2007, 日本物理学会講演概要集, 62(2) (2), 556 - 556, Japanese

  • 19aPS-63 Control of magnetoelectric properties in orthorhombic RMnO_3 crystals by hydrostatic pressure
    Nakamura F, Akaki M, Shiraishi R, Noda K, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), 570 - 570, Japanese

  • 18aWG-10 Magnetoelectric properties in A_2CoSi_2O_7 crystals with low dimensional structures
    Akaki M, Nakamura F, Shiraishi R, Noda K, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), 491 - 491, Japanese

  • 18aWG-9 Rare-earth moment effect on magnetoelectricity in orthorhorabic RMaO_3 crystals
    Noda K, Akaki M, Nakamura F, Shiraishi R, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), 491 - 491, Japanese

  • 21pWH-8 Magnetic-field-induced pyroelectricity in Ca_2CoSi_2O_7 crystal with low dimensional structure
    Akaki M, Nakamura F, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), 556 - 556, Japanese

  • 21aPS-88 External control of the ferroelectricity near the A-type antiferromagnetic phase in the orthorhombic RMnO_3 II
    Nakamura F, Akaki M, Noda K, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), 537 - 537, Japanese

  • 21aPS-83 Time dependence of Reflectivity of Perovskite Oxides
    Tasaki R, Kouyama K, Akaki M, Akahoshi D, Ema K, Kuwahara H
    The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), 536 - 536, Japanese

  • 27aRA-4 4f internal-magnetic-field effect on magnetoelectricity in orthorhombic RMnO_3 Crystals
    Noda K, Akaki M, Kikuchi T, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), 505 - 505, Japanese

  • 27aPS-55 Magnetoelectric effect in Gd_<1-y>Tb_yMnO_3 crystals
    Akaki M, Noda K, Kikuchi T, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), 532 - 532, Japanese

  • 24aPS-45 Magnetoelectric properties in cobalt oxides with low dimensional structures
    Akaki M, Noda K, Nakamura F, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), 450 - 450, Japanese

  • Hamasaki T., Akaki M., Kuroe H., Kuwahara H., Sekine T., Hase M., Maeshima N., Saiga Y., Uwatoko Y.
    The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), 335 - 335, Japanese

  • 23aZQ-3 External field control of the ferroelectricity near the A-type antiferromagnetic phase in the orthorhombic RMnO_3
    Noda K, Akaki M, Nakamura F, Shiraishi R, Akahoshi D, Kuwahara H
    The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), 386 - 386, Japanese

  • 27pWE-1 Bandwidth control effects on dielectric properties of RMaO_3 crystals
    Noda Kohei, Nakamura shigeru, Akaki Mitsuru, Kuwahara Hideki
    The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), 613 - 613, Japanese

  • 20aYH-4 Randomness effets of orthorhombic distortion on dielectric properties of RMnO_3 crystals
    Noda Kohei, Akaki Mitsuru, Kikuchi Toshiyuki, Akahoshi Daisuke, Kuwahara Hideki
    The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), 423 - 423, Japanese

■ Affiliated Academic Society
  • HIGH MAGNETIC FIELD FORUM

  • THE PHYSICAL SOCIETY OF JAPAN

  • The Society of Electron Spin Science and Technology (SEST)

■ Research Themes
  • 多自由度相関磁気熱量効果と非相反熱伝導及び新規磁気冷凍システムの開拓
    赤木 暢
    熱・電気エネルギー技術財団, 第30回研究助成, 東北大学 金属材料研究所, Dec. 2022 - Dec. 2023, Principal investigator

  • Single domain crystal growth and pulsed high magnetic field measurements in CaBaCo4O7
    Akaki Mitsuru
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Osaka University, Apr. 2019 - Mar. 2022, Principal investigator
    Pulsed-high magnetic field experiments studied the magnetic and dielectric properties of the strong frustrated magnet CaBaCo4O7. The preparation of monodomain crystal samples and the development of high-field electron spin resonance measurements proceeded. In particular, I developed high-field and multi-frequency electron spin resonance measurements and advanced measurement techniques such as the realization of electric-field-applied electron spin resonance measurement and improvement of sensitivity of pulsed high-field electron spin resonance measurement. The developed high-field electron spin resonance experiments were also applied to magnetic materials other than the target materials, and many research results were obtained.

  • Control of electric domains in spin-driven multiferroic materials by means of rotating magnetic fields
    Kuwahara Hideki, AKAHOSHI Daisuke, AKAKI Mitsuru
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Sophia University, 01 Apr. 2015 - 31 Mar. 2018
    We have investigated change of electric domains in high-quality BiFeO3 single crystal grown by the laser-diode floating-zone method, as a function of applied magnetic-field (H) direction. We have demonstrated that electric polarization along the Y direction (PY) has been controlled by means of rotating H. Namely, PY was proportional to cos2q, where q is the angle of applied H direction against [100]. q dependence of PY has a π-periodicity, which means that PY remains unchanged by reversal of applied H direction. Furthermore, we have studied nonreciprocal DC magnetoelectric response, i.e., crystalline (polar) direction dependence of magnetoelectric susceptibilities for CaBaM4O7 (M=Co,Fe) single crystals. Especially, we focused on the electric-field (Ec)-induced magnetization (Mb,Mc) in CaBaM4O7, which had almost not yet been performed. We have found that the obtained magnetoelectric susceptibility α32 defined as ΔMb=α32Ec has a different sign depending on the polar direction.

  • Coオケルマナイトにおける新奇磁気状態の解明
    Mitsuru Akaki
    JSPS, Grants-in-Aid for Scientific Research, Apr. 2015 - Mar. 2018, Principal investigator
    Competitive research funding

  • Magnetoelectric properties of Ca2CoSi2O7 studied by high-field electron spin resonance
    Mitsuru Akaki
    湯川記念財団望月基金, 国際会議派遣助成, Aug. 2017 - Aug. 2017, Principal investigator
    Competitive research funding

  • Phase-separation and phase-control of the ordered state near the critical point by introducing the local inhomogeneity
    KUWAHARA Hideki, AKAHOSHI Daisuke, AKAKI Mitsuru
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Sophia University, 01 Apr. 2012 - 31 Mar. 2015
    We have investigated the Mn-site substitution effect in Nd0.45Sr0.55MnO3 crystal, which has an A-type layered antiferromagnetic (A-AFM) phase with the 3dx2-y2-type orbital-order. Substitution of Fe or Ga for Mn-site suppresses both the A-AFM order and competing ferromagnetic (FM) correlation, whereas Cr substitution suppresses only the A-AFM order but reactivates the underlying FM correlation via double-exchange mechanism. In Nd0.45Sr0.55Mn0.95Cr0.05O3, the A-AFM state with the orbital-order is changed into the orbital-disordered three-dimensional FM metallic state by applying magnetic field of 12 T, which is much smaller than that of the parent compound. In addition, We have studied impurity-doping effect in multiferroic CaBa(Co1-xFex)4O7 with 0≦x≦0.25. The magnetization curve shows that the magnetic moment sharply rises at 64K for x = 0 and 54K for x = 0.005, while it does not change for 0.0156≦x. This result indicates that the ferrimagnetic state disappears above 0.0156.

  • パルス強磁場を用いた電気磁気効果の研究と新規電気磁気効果材料の探索
    Mitsuru Akaki
    JSPS, Grants-in-Aid for Research, Apr. 2013 - Mar. 2015, Principal investigator
    Competitive research funding

  • 強相関酸化物結晶における新奇磁性強誘電体の探索と交差相制御
    Mitsuru Akaki
    JSPS, Grants-in-Aid for Research, Apr. 2008 - Mar. 2011, Principal investigator
    Competitive research funding

■ Industrial Property Rights
  • 磁性イオンを含むオケルマナイト構造を有する電気磁気効果材料を用いた電気磁気効果素子
    桑原 英樹, 赤木 暢
    特願2011-205239, 20 Sep. 2011, 学校法人上智学院, 特開2013-069724, 18 Apr. 2013, 特許第5957195号, 24 Jun. 2016
    Patent right
    IRI

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