Spin Fluctuations in an Octahedral Antiferromagnet Mn<sub>3</sub>Pt Alloy
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- Ikeda Takashi
- School of Science and Engineering, Waseda University
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- Tsunoda Yorihiko
- School of Science and Engineering, Waseda University
書誌事項
- タイトル別名
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- Spin Fluctuations in an Octahedral Antiferromagnet Mn3Pt Alloy
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説明
A new spin frustration system with an octahedral configuration of magnetic atoms was found. In neutron scattering measurements for an ordered Mn3Pt alloy, inelastic diffuse scattering intensity distributes along the first Brillouin zone-boundary of the fcc structure in the paramagnetic and the F-phases. Within the calculations based on a RPA, the experimental data in the paramagnetic phase are reproduced using antiferromagnetic couplings between the spins up to the third-neighbor exchange interactions. In the F-phase below the Néel temperature, a part of the Mn spins still fluctuates at the special site. The existence of the F-phase is a characteristic of the octahedral spin frustration system. The effects of the chemical disorder on the spin frustration are also studied using a specimen with a small atomic LRO parameter.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 72 (10), 2614-2621, 2003
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204186823936
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- NII論文ID
- 210000104501
- 110001954273
- 130004538272
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2003JPSJ...72.2614I
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 6713928
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
