2011 Fiscal Year Final Research Report
Investigations of couplings between are earth quadrupolar orderings and lattice vibrations by dichromatic neutron diffraction
Project/Area Number |
21540350
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | Tohoku University |
Principal Investigator |
OHOYAMA Kenji 東北大学, 金属材料研究所, 准教授 (60241569)
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Co-Investigator(Kenkyū-buntansha) |
HIRAKA Haruhiro 東北大学, 金属材料研究所, 助教 (90323097)
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Co-Investigator(Renkei-kenkyūsha) |
MATSUOKA Eiichi 神戸大学, 理学部, 准教授 (20400228)
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Project Period (FY) |
2009 – 2011
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Keywords | 強相関系 / 多極子秩序 |
Research Abstract |
The main purpose of this project was to clarify couplings between lattice and quadrupole and magnetic orderings in rare earth antiferroquadrupolar ordering compounds through observations of thermal vibrations of nucleus and magnetic moments. For the observations, we proposed dichromatic neutron using two different wave lengths. We succeeded in upgrading a neutron powder diffractometer by this project. High resolution diffraction experiments with lower wave length, and wide -Q diffraction experiments with high wave length have been feasible on one diffractometer. Though the main experiments could not be performed because of the earthquake, feasibility of the wide-Q experiments with dichromatic beams has been confirmed. Moreover, by the upgrades, neutron holography experiments, and polarised neutronexperiments are realised on the powder diffractometer.
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Research Products
(28 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, Nucl
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Journal Title
Meth. Phys. Res A
Volume: 680
Pages: 75-81
DOI
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[Journal Article] Modified cross-correlation for efficient white-beam inelastic neutron scattering spectroscopy2012
Author(s)
K. Tomiyasu, M. Matsuura, H. Kimura, K. Iwasa, K. Ohoyama, T. Yokoo,S. Ioth, E. Kudoh, T. Sato, M. Fujita, Nucl.
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Journal Title
Instrum. Meth. Phys. Res.
Volume: A 677
Pages: 89-93
DOI
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[Journal Article] Universal Magnetic Structure of theHalf-Magnetization Phase in Cr-Based Spinels2010
Author(s)
M. Matsuda, K. Ohoyama, S. Yoshii, H. Nojiri, P. Frings, F. Duc, B. Vignolle, G. L. J. A. Rikken, L.-P. Regnault4, S.-H. Lee, H. Ueda, and Y. Ueda
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Journal Title
Phys. Rev. Lett
Volume: 104
Pages: 047201(1)-(4)
DOI
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[Journal Article] Neutron Diffraction Study on the Multiple Magnetization Plateaus in TbB_4 under Pulsed High Magnetic Field2009
Author(s)
S. Yoshii, K. Ohoyama, K. Kurosawa, H. Nojiri, M. Matsuda, P. Frings, F. Duc, B. Vignolle, G. L. Rikken, L.-P. Regnault, S. Michimura, and F
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Journal Title
Iga Phys. Rev. Lett
Volume: 103
Pages: 077203(1)-(4)
DOI
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[Presentation] Polarised Neutron Diffraction System with a Transportable 3He Spin Filter on a Powder Diffractometer2012
Author(s)
K. Ohoyama, K. Tsutsumi, T. Ino, H. Hiraka, Y. Yamaguchi, H. Kira, T. Oku, Y. Sakaguchie, W. Zhang, H. Kimura, M. Takeda, J. Suzuki, K. Yamada, K. Kakurai
Organizer
PNCMI 2012; Polarized Neutrons for Condensed Matter Investigations 2012
Place of Presentation
パリ、フランス
Year and Date
20120702-05
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[Presentation] 東北大装置での偏極実験装置開発と応用実験の現状2010
Author(s)
大山研司,堤健之,平賀晴弘,猪野隆,吉良弘,坂口佳史,奥隆之,有本靖,武田全康,鈴木淳市,堀金和正,岩佐和晃,F.Wu,窪田崇秀,水上成美,宮崎照宣,山田和芳,加倉井和久
Organizer
日本物理学会2010年秋季大会
Place of Presentation
大阪府立大
Year and Date
20100923-26
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[Presentation] 偏極中性子を用いた鉄系合金の磁気散漫散乱の観測2010
Author(s)
堤健之,大山研司,平賀晴弘,山口泰男,猪野隆,吉良弘,坂口佳史,奥隆之,有本靖B,武田全康,鈴木淳市,岩佐和晃,加倉井和久,山田和芳
Organizer
日本物理学会2010年秋季大会
Place of Presentation
大阪府立大
Year and Date
20100923-26
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[Presentation] ^3Heスピンフィルター法を用いた偏極中性子散乱装置の開発2009
Author(s)
大山研司,平賀晴弘,堤健之,猪野隆,奥隆之,吉良弘,坂口佳史,有本靖,武田全康,鈴木淳市,山田和芳,加倉井和久
Organizer
日本物理学会2009年秋季大会
Place of Presentation
熊本大学
Year and Date
20090925-28
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