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- Yamaoka Takashi
- Department of Chemistry, Faculty of Science, Kyoto University
書誌事項
- タイトル別名
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- Antiferromagnetism in ガンマ-phase Mn-Ir alloys
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抄録
Crystallographic and magnetic properties were studied in the disordered γ-phase Mn1−xIrx (0.05<x<0.35) alloys. In Mn rich alloys, tetragonal distortion with axial ratio c⁄a>1 occurs at a temperature below their Néel temperature, TN. The tetragonal distortion temperature, Td in the antiferromagnetic ordered state decreases rapidly with increasing Ir and the alloys with x>0.15 remain cubic down to low temperatures. On the other hand, TN increases with alloying Ir at a rate of about 9 K/at%Ir up to 730 K at x=0.25 and it is extrapolated to 500±20 K for fcc Mn. It was concluded that the anomalous rise of TN is not mainly attributed to atomic order nor to the enhancement of exchange interaction due to lattice expansion, but that the perturbation of band structure due to alloying leads to stronger magnetic interaction. A Cu3Au type atomic ordering in the vicinity of x=0.25 was found to raise the TN by about 200 K. The origin of tetragonal distortion is discussed.
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 36 (2), 445-450, 1974
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
- 1390001204186232704
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- NII論文ID
- 110001958928
- 210000084420
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1974JPSJ...36..445Y
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- COI
- 1:CAS:528:DyaE2cXovVymug%3D%3D
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- ISSN
- 13474073
- 00319015
- http://id.crossref.org/issn/00319015
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- NDL書誌ID
- 7669376
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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