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研究活動

口頭発表 2017年

2017.12.11

2017.12.05

2017.12.05

2017.11.20

2017.11.20

2017.11.10

2017.11.6-10

Theoretical study on magnetic properties of NdFe12 and Pr(Fe1-xVx)12

Hiroki Tsuchiura(Tohoku University), Takuya Yoshioka(Tohoku University), Schrefl Thomas(Danube University Krems)

2017.11.6-10

First principles study on magnetic properties of Sm(Fe1-xCox)12

Takuya Yoshioka( Tohoku University) , Daiki Suzuki ( Tohoku University) , Hiroki Tsuchiura(Tohoku University)

2017.11.09

2017.11.09

Temperature dependent changes of the crystalline phases in a Nd-Fe-B sintered magnetstudied by synchrotron X-ray diffraction

岡﨑宏之,辻成希,上野若菜,合田義弘,小谷佳範,David Billington,河口彰吾,杉本邦久,豊木研太郎,広沢哲,中村哲也

2017.11.07

First-principles study on the role of Nd6Fe13Ga in Nd-Fe-B magnets

Yasutomi Tatetsu, Shinji Tsuneyuki, Yoshihiro Gohda

2017.11.07

2017.11.6-10

Time Domain Study of Magnetization Dynamics to Evaluate Interlayer Exchange Coupling Constant in Nd2Fe14B/Ni80Fe20 Films

Ruma MANDAL(NIMS), Yukiko TAKAHASHI(NIMS), Kunie ISHIOKA(NIMS), Toshiyuki SHIMA(Tohoku GakuinUniversit, Daisuke OGAWA(NIMS), Takeshi KATO(Nagoya University), Satoshi IWATA(NagoyaUniversity), Satoshi HIROSAWA(NIMS), Kazuhiro HONO(NIMS)

2017.11.6-10

Microstructure analysis of a Ga-doped NdFeB magnet with 2.0T coercivity

XU Xiandong(NIMS),Zhanji Dong(Yantai Shougang Magnetic Materials Inc), KIM Tae-Hoon(NIMS),SASAKI Taisuke(NIMS),OHKUBO Tadakatsu(NIMS),HONO Kazuhiro(NIMS)

2017.11.6-10

Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd64Fe12Ga20Cu4 alloy

LIU Lihua(NIMS), Sepehri Amin Hossein(NIMS), SASAKI Taisuke(NIMS), OHKUBO Tadakatsu(NIMS), YANO Masao(Toyota), SAKUMA Noritsugu(Toyota), KATO Akira(Toyota), SHOJI Tetsuya(Toyota), HONO Kazuhiro(NIMS)

2017.10.20

2017.10.18

2017.09.28

2017.09.28

2017.09.28

Free energy barrier at magnetization reversal for rare-earth permanent magnets

Y. Toga, S. Doi, M. Matsumoto, S. Miyashita, H. Akai, Takashi Miyake and A. Sakuma

2017.9.27-29

2017.9.27-29

Magnetic properties of La doped rare earth permanent magnets

M. Hoffmann, M. Matsumoto, and H. Akaii

2017.9.27-29

2017.09.27

2017.09.25

2017.09.22

2017.09.22

2017.09.22

スピン模型による局所磁化反転時におけるエネルギー障壁の外場依存性 II

栂裕太,土居抄太郎,松本宗久,宮下精二,赤井久純,三宅隆,佐久間昭正

2017.9.19-22

第一原理計算に基づく 1-12系希土類金属間化合物の磁気特性解析

吉岡匠哉, ( 東北大学) 鈴木大規( 東北大学) , 土浦宏紀( 東北大学)

2017.9.21-23

Nd-Fe-B-Cu 合金の表面張力へ及ぼす酸素含有量の影響

野口大介(東北大)、竹田修(東北大)、朱鴻民(東北大)、杉本諭(東北大)

2017.09.21

YFe12NおよびY2Fe17N3の磁性における窒素の効果と結晶構造との関係に対する第一原理的研究

原嶋庸介,深澤太郎,寺倉清之,木野日織,石橋章司,三宅隆

2017.09.21

2017.9.19-22

2017.9.19-22

Estimation of Interlayer Exchange Coupling Constant in Nd2Fe14B/ Ni80Fe20 Thin Film: A TRMOKE Study

MANDALRuma(NIMS) , TAKAHASHI Yukiko(NIMS) , HONO Kazuhiro(NIMS) ISHIOKA Kunie(NIMS) , Shima Toshiyuki (Tohoku Gakuin University) , OGAWA Daisuke(NIMS) KATO Takeshi(Nagoya University) , IWATA Satoshi(Nagoya University) , HIROSAWA Satoshi(NIMS)

2017.9.6-8

起電力法によるNd2Fe14B の標準生成Gibbs エネルギー測定

野口大介(東北大)、竹田修(東北大)、朱鴻民(東北大)、杉本諭(東北大)

2017.9.6-8

Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd64Fe12Ga20Cu4 alloy

LIU Lihua(NIMS), Sepehri Amin Hossein(NIMS), SASAKI Taisuke(NIMS),OHKUBO Tadakatsu(NIMS), YANO Masao(Toyota), SAKUMA Noritsugu(Toyota),KATO Akira(Toyota), SHOJI Tetsuya (Toyota), HONO Kazuhiro(NIMS)

2017.9.6-8

Microstructure analysis of a Ga-doped Nd-Fe-B magnet with 2T coercivity

XU Xiandong(NIMS), SASAKI Taisuke(NIMS), KIM Tae-Hoon(NIMS), OHKUBO Tadakatsu(NIMS), HONO Kazuhiro(NIMS)

2017.09.05

First-Principles Study on the Magnetic Anisotropy of Ga-Added Nd-Fe-B Magnets

Yasutomi Tatetsu, Shinji Tsuneyuki, Yoshihiro Gohda

2017.07.25

2017.07.11

2017.07.11

Nd-Fe-B磁石の元素添加効果に関する第一原理計算

立津 慶幸, 常行 真司, 合田 義弘

2017.7.1-5

Magnetic Domain Structure and Local Magnetic Property of a Nd-Fe-B Sintered MagnetProbed by Scanning XMCD Spectromicroscopy

Nakamura T. 1, 2, Kotani Y. 1 , Toyoki K. 1 , Billington D. 1 , Okazaki H. 1 , Hirosawa S. 2 , 1 JASRI,2 ESICMM/NIMS

2017.06.09

電子論が生み出すもの

三宅 隆 (AIST)

2017.06.09

Influence of grain morphology on coercivity of Nd-Fe-B based permanent magnets

SEPEHRI AMIN Hossein(NIMS), PARK Pumsuk(LGC), TANG Xin(NIMS/Tsukuba Univ.), OHKUBO Tadakatsu(NIMS), HONO Kazuhiro(NIMS)

2017.05.26

2017.5.9-11

Dy-free high coercivity Nd-Fe-B permanent magnets / Dy-free high coercivity Nd-Fe-B permanent magnets

SEPEHRI AMIN Hossein(NIMS), OHKUBO Tadakatsu(NIMS), HONO Kazuhiro(NIMS)

2017.4.24-28

Coercivity reduction in Nd-Fe-B particles due to local anomalous magnetic anistropy around their interfaces.

Hiroki Tsuchiura(Tohoku University), Takuya Yoshioka(Tohoku University)

2017.04.27

Atomic scale simulations(LLG and MC) of magnetization reversal at finite temperatures.

S. Miyashita1,2, M. Nishino2,3, Y. Toga2, A. Sakuma4, S. Hirosawa2, T. Miyake5,2, H. Akai6,2and S. Doi6,2, 1. Physics, University of Tokyo, Tokyo, Japan; 2. ESCIMM, NIMS, Tsukuba,Japan; 3. MANA, NIMS, Tsukuba, Japan; 4. Applied Physics, Tohoku University, Sendai, Japan;5. CD DMat, AIST, Tsukuba, Japan; 6. ISSP, University of Tokyo, Kashiwa, Japan

2017.04.26

First-principles study on element-doping effects in Nd-Fe-B sintered magnets

Yasutomi Tatetsu, Shinji Tsuneyuki, and Yoshihiro Gohda

2017.04.25

2017.4.24-28

Magnetic and microstructural changes of Dy-free and Dy-containing Nd-Fe-B sintered magnets during grain boundary diffusion process

KIM Tae-Hoon(NIMS), SASAKI Taisuke(NIMS), OHKUBO Tadakatsu(NIMS), A. Kato(Toyota Motor Corp), Y. Takada(Toyota Central R&D Labs., Inc), Y. Kaneko(Toyota Central R&D Labs., Inc.),HONO Kazuhiro(NIMS)

2017.04.19

Development of Crystal Structure Prediction Method for Magnet Materials

Tomoki Yamashita, Hiori Kino, Takashi Miyake, Koji Tsuda and Tamio Oguchi

2017.03.24

2017.03.18

スピン模型による局所磁化反転時におけるエネルギー障壁の外場依存性

栂裕太,土居抄太郎,松本宗久,宮下精二,赤井久純,三宅隆,佐久間昭正

2017.03.18

ThMn12型永久磁石化合物の安定性に対するZr添加の効果の第一原理的研究

原嶋庸介,寺倉清之,木野日織,石橋章司,三宅隆

2017.03.18

2017.03.18

Ga添加型Nd-Fe-Bの第一原理的研究

立津 慶幸,常行 真司,合田 義弘

2017.03.16

2017.3.15-17

Nd-Fe-B合金の表面張力へおよぼす酸素、銅、ガリウム濃度の影響

野口大介(東北大)、竹田修(東北大)、朱鴻民(東北大)、杉本諭(東北大)

2017.03.13

2017.03.01

2017.02.28

Temperature Dependence of Threshold of Magnetic Fields for Nucleation and Domain WallPropagation.

S. Miyashita1, M. Nishino2, ; 1 The University of Tokyo; 2 National Institute for MaterialScience

2017.02.28

2017.1.18-19


研究活動

文部科学省

文部科学省
元素戦略プロジェクト(活動紹介)
NIMS磁石パートナーシップ

元素戦略拠点

触媒・電池元素戦略拠点
触媒・電池元素戦略研究拠点 (京都大学)
東工大元素戦略拠点
東工大元素戦略拠点 (東京工業大学)
構造材料元素戦略研究拠点
構造材料元素戦略研究拠点 (京都大学)
高効率モーター用磁性材料技術研究組合
高効率モーター用 磁性材料技術研究組合