Research for the magnetic and electronic states of the quaternary Heusler alloys with high spin polarization
| Project/Area Number |
16K14370
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical properties of metals/Metal-base materials
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| Research Institution | Tohoku University |
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Principal Investigator |
Umetsu Rie 東北大学, 金属材料研究所, 准教授 (60422086)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ホイスラー合金 / ハーフメタル型電子状態 / 原子配列 / 磁気モーメント / 粉末中性子回折 / 磁性・電子・情報材料 |
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| Outline of Final Research Achievements |
The objective of the present study is to search new quaternary Heuseler alloys with high spin polarization and to experimentally confirm the half-metallic electronic state. CoVMnAl and CrTiVAl alloys were fabricated and powder neutron diffraction experiments were performed in order to decide the atomic configuration. It is cleared that both alloys include a part of disordering and the results are different to the previous report. Furthermore, absorption x-ray spectroscopy and resonant inelastic x-ray scattering in magnetic field were experienced in SPring-8 with using Mn2VAl and Co2MnSi single crystals, that are typical materials as the half-metallic ferro-(ferri-)magnets. Obtained spectra are well reproduced by the simulated ones based on the density functional theory. It is said that these experiments are powerful tool to confirm the characteristic electronic state of the half-metallic materials.
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Report
(3 results)
Research Products
(26 results)
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[Presentation] 磁場中軟X線共鳴発光分光によるハーフメタル型ホイスラー合金Mn2VAlの電子構造研究2018
Author(s)
藤原秀紀, 梅津理恵, 永井浩大, 中谷泰博, 川田萌樹, 関山明, 黒田文彬, 藤井将, 小口多美夫, 原田慈久, 宮脇淳, 菅滋正
Organizer
第30回日本放射光学会年会・放射光科学合同シンポジウム
Related Report
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[Presentation] 軟X線吸収磁気円二色性によるフェリ磁性体Mn2VAl単結晶の磁性・電子構造研究2017
Author(s)
永井浩大, 藤原秀紀, 荒谷秀和, 藤岡修平, 右衛門佐寛, 木須孝幸, 関山明, 菅滋正, 黒田文彬, 藤井将, 小口多美夫, 田中新, 竹田幸治, 斎藤祐児, 鹿又武, 梅津理恵
Organizer
日本物理学会第75回年次大会
Place of Presentation
大阪大学
Year and Date
2017-03-17
Related Report
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[Presentation] 軟X線磁気円二色性によるハーフメタルホイスラー合金Mn2VAlの電子構造研究2017
Author(s)
永井浩大, 藤原秀紀, 荒谷秀和, 藤岡修平, 右衛門佐寛, 木須孝幸, 黒田文彬, 藤井将, 小口多美夫, 田中新, 梅津理恵, 菅滋正, 竹田幸治, 斎藤祐児, 関山明
Organizer
第30回日本放射光学会年会・放射光科学合同シンポジウム
Place of Presentation
神戸芸術センター
Year and Date
2017-01-07
Related Report
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