Neutron scattering spectroscopic study on spin dynamics of metallic ferromagnets and a practical use of high-luminosity neutron monochromators
Project/Area Number |
22340089
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | High Energy Accelerator Research Organization (2012-2013) Tohoku University (2010-2011) |
Principal Investigator |
HIRAKA Haruhiro 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 特任准教授 (90323097)
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Co-Investigator(Kenkyū-buntansha) |
ENDOH Yasuo 東北大学, 金属材料研究所, 名誉教授 (00013483)
堀金 和正 東北大学, 原子分子材料科学高等研究機構, 助手 (10406829)
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Project Period (FY) |
2010-04-01 – 2013-03-31
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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Keywords | 金属磁性 / 中性子散乱 / 結晶モノクロメータ / 遍歴電子磁性 / スピンダイナミクス / 中性子モノクロメータ / モノクロメータ結晶 / 結晶工学 |
Research Abstract |
Spin dynamics of metallic magnets were studied by using pulsed neutrons and reactor-based neutrons. In particular, for a metallic antiferromagnet system (Mn,Fe)3Si, we succeeded in observing magnetic excitations in a wide energy range of 1~100 meV. As a result, a switching of spin dynamics from localized-spin nature to itinerant-electron spin one was clarified. At the same time, we developed a new type of neutron-monochromator crystals and revealed that Ge-semiconductor crystals, which were plastically deformed in a curved shape, were available for neutron-focusing-monochromator components.
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Report
(4 results)
Research Products
(67 results)
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[Journal Article] Development of a non-adiabatic two-coil spin flipper for a polarised thermal neutron diffractometer with a 3He spin filter2012
Author(s)
K. Ohoyama, K. Tsutsumi, T. Ino, H. Hiraka, Y. Yamaguchi, H. Kira, T. Oku, Y. Sakaguchi, Y. Arimoto, W. Zhang, H. Kimura, K. Iwasa, M. Takeda, J. Suzuki, K. Yamada, K. Kakurai
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Journal Title
Nucl. Inst. Meth. Phys. Res.
Volume: A 680
Pages: 75-81
Related Report
Peer Reviewed
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[Journal Article] Electronic excitations around the substituted element by resonant inelastic x-ray scattering of La2Cu1_-yNiyO42012
Author(s)
K. Ishii, K. Tsutsui, K. Ikeuchi, I. Jarrige, J. Mizuki, H. Hiraka, K. Yamada, T. Tohyama, S. Maekawa, Y. Endoh, H. Ishii, Y.Q. Cai
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Journal Title
Phys. Rev.
Volume: B , 85
Related Report
Peer Reviewed
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[Journal Article] Characterization of glasses for ^3He neutron spin filter cells2011
Author(s)
Y. Sakaguchi, H. Kira, T. Oku, T. Shinohara, J. Suzuki, K. Sakai, M. Nakamura, K. Suzuya, M. Arai, M. Takeda, S. Wakimoto, D. Yamazaki, S. Koizumi, Y. Endoh, K. Kakurai, Y. Arimoto, T. Ino, H.M. Shimizu, T. Kamiyama, K. Ohoyama, H. Hiraka, K. Tsutsumi, K. Yamada, L.-J. Chang
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Journal Title
Nucl. Inst. Meth. Phys. Res.
Volume: A 634
Issue: 1
Pages: 122-125
DOI
Related Report
Peer Reviewed
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[Journal Article] The Fermi Chopper Spectrometer 4SEASONS at J-PARC2011
Author(s)
Ryoichi Kajimoto, Mitsutaka akamura, Yasuhiro Inamura, Fumio Mizuno, Kenji Nakajima, Seiko Ohira -Kawamura, Tetsuya Yokoo, Takeshi Nakatani, Ryuji Maruyama, Kazuhiko Soyama, Kaoru Shibata, Kentaro Suzuya, Setsuo Sato, Kazuya Aizawa, Masatoshi Arai, Shuichi Wakimoto, Motoyuki Ishikado, Shin-ichi Shamoto, Masaki Fujita, Haruhiro Hiraka, Kenji Ohoyama,Kazuyoshi Yamada,and Chul-Ho Lee
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Journal Title
J. Phys. Soc. Jpn.
Volume: 80
Pages: 1-6
Related Report
Peer Reviewed
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[Journal Article] External cavity design of high-power diode laser for polarized helium-3 neutron spin filters based on spin-exchange optical pumping2011
Author(s)
Y. Arimoto, T. Ino, H.M. Shimizu, T. Kamiyama, H. Kira, T. Oku, Y. Sakaguchi, K. Kakurai, K. Sakai, J. Suzuki, S. Koizumi, M. Arai, Y. Endoh, M. Nakamura, T. Shinohara, M. Takeda, S. Wakimoto, D. Yamazaki, K. Ohoymama, H. Hiraka, K. Yamada, K. Tsutsumi, L.-J. Chang
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Journal Title
Physica
Volume: B 406
Issue: 12
Pages: 2439-2442
DOI
Related Report
Peer Reviewed
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[Journal Article] Research on glass cells for ^3He neutron spin filters2011
Author(s)
Y. Sakaguchi, H. Kira, T. Oku, T. Shinohara, J. Suzuki, K. Sakai, M. Nakamura, K. Suzuya, K. Aizawa, M. Arai, M. Takeda, S. Wakimoto, D. Yamazaki, S. Koizumi, Y. Endoh, L.J. Chang, Y. Arimoto, T. Ino, H.M. Shimizu, T. Kamiyama, K. Ohoyama, H. Hiraka, K. Tsutsumi, K. Yamada, K.Ohara, K. Kakurai
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Journal Title
Physica
Volume: B 406
Issue: 12
Pages: 2443-2447
DOI
Related Report
Peer Reviewed
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[Journal Article] Development and test of SEOP neutron spin filter in Japan2011
Author(s)
H. Kira, Y. Sakaguchi, T. Oku, J. Suzuki, M. Nakamura, M. Arai, K. Kakurai, Y. Endoh, Y. Arimoto, T. Ino, H.M. Shimizu, T. Kamiyama, K. Tsutsumi, K. Ohoyama, H. Hiraka, K. Yamada, L.-J. Chang
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Journal Title
Physica
Volume: B 406
Issue: 12
Pages: 2433-2435
DOI
Related Report
Peer Reviewed
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[Journal Article] Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi1.75Pb0.35Sr1.90Cu0.91Fe0.09O6+y2010
Author(s)
S. Wakimoto, H. Hiraka, K. Kudo, D. Okamoto, T. Nishizaki, K. Kakurai, T. Hong, A. Zheludev, J. M. Tranquada, N. Kobayashi, K. Yamada
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Journal Title
Phys. Rev.
Volume: B 82
Pages: 1-7
Related Report
Peer Reviewed
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[Journal Article] Incommensurate spin correlations induced by magnetic Fe ions substituted into overdoped Bi1.75Pb0.35Sr1.90CuO6+z2010
Author(s)
H. Hiraka, Y. Hayashi, S. Wakimoto, M. Takeda, K. Kakurai, T. Adachi, Y Koike, I. Yamada, M. Miyazaki, M. Hiraishi, S. Takeshita, A. Kohda, R. Kadono, J.M. Tranquada, K. Yamada
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Journal Title
Phys. Rev.
Volume: B 81
Pages: 1-6
Related Report
Peer Reviewed
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[Presentation] Renovation of Neutron Monochromator Crystals at IMR2012
Author(s)
H. Hiraka, Y. Yamaguchi, S. Tozawa, T. Shishido, K. Yubuta, T. Komatsubara, N. Murakami, M. Matsuura, K. Ohoyama, K. Fujiwara, Y. Miyake, M. Onodera, K. Morishita, K. Nakajima, and K. Yamada
Organizer
Summit of Materials Science 2012
Place of Presentation
Tohoku University
Related Report
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[Presentation] 東北大・金研における中性子モノクロメータ結晶開発の現状2012
Author(s)
平賀晴弘, 山口泰男, 戸津慎一郎, 宍戸統悦, 湯蓋邦夫, 小松原武美, 小野寺貢, 三宅悠子, 村上直樹, 大山研司, C.H. Lee, 萩原雅人, 益田隆嗣, 大久保一馬, 古坂道弘, 鬼柳善明, 森下浩平, 中嶋一雄, 山田和芳
Organizer
日本物理学会2012年秋季大会
Place of Presentation
横浜国立大
Related Report
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[Presentation] 反強磁性金属Mn3Siにおける磁気励起の研究~四季でのパルス中性子非弾性散乱実験~2012
Author(s)
平賀晴弘, 奈良壮, 山口泰男, 崖純彰, 大山研司, 池内和彦, Sungdae Ji, 梶本亮一, 中村充孝, 稲村泰弘, 新井正敏, 山田和芳
Organizer
日本物理学会2012年秋季大会
Place of Presentation
横浜国立大
Related Report
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[Presentation] Neutron Monochromator Development at IMR Tohoku University2011
Author(s)
H. Hiraka, S. Tozawa, T. Shishido, Y. Yamaguchi, Y. Miyake, N. Murakami, M. Matsuura, K. Yubuta, K. Ohoyama, K. Morishita, K. Nakajima, and K. Yamada
Organizer
1st Asia-Oceania Conference on Neutron Scattering
Place of Presentation
Tsukuba
Related Report
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[Presentation] Neutron Monochromator Development at IMR Tohoku University2011
Author(s)
(H. Hiraka), S. Tozawa, T. Shishido, Y. Yamaguchi, Y. Miyake, N. Murakami, M. Matsuura, K. Yubuta, K. Ohoyama, K. Morishita, K. Nakajima, and K. Yamada
Organizer
1st Asia-Oceania Conference on Neutron Scattering
Place of Presentation
Tsukuba, Ibaraki
Related Report
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