Neutron Diffraction Study of γ-Phase Mn–Ir Single Crystals
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- Yamaoka Takashi
- Department of Chemistry, Faculty of Science, Kyoto University
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- Mekata Mamoru
- Department of Chemistry, Faculty of Science, Kyoto University
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- Takaki Hideo
- Department of Chemistry, Faculty of Science, Kyoto University
Bibliographic Information
- Other Title
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- Neutron diffraction study of ガンマ-phase Mn-Ir single crystals
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Abstract
Neutron diffraction was measured on single crystals of the disordered γ-phase Mn1−xIrx(x=0.128, 0.170, 0.204 and 0.256). Diffraction patterns were interpreted by an antiferromagnetic two-sublattice structure with tetragonal symmetry. The (110) magnetic reflection was measured up to about 800 K for the determination of the temperature dependence of sublattice magnetization and the Néel temperature. The critical index for magnetization was found to be 0.38 for the x=0.170 alloy. The Néel temperature increases remarkably with increasing Ir at a rate of about 9 K/at%Ir. The obtained magnetic form factors are well expressed by f=(1⁄0.9)(f3d−0.1f4s) constructed from the scattering functions calculated by Freeman and Watson. The average magnetic moment per Mn atom increases from 2.2μB to 2.6μB with increasing Ir from x=0 to x=0.204. Diffuse scattering due to partial atomic order of Mn3Ir was observed in the x=0.256 alloys.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 36 (2), 438-444, 1974
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204190838784
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- NII Article ID
- 210000084419
- 110001958927
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- NII Book ID
- AA00704814
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- BIBCODE
- 1974JPSJ...36..438Y
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- COI
- 1:CAS:528:DyaE2cXovVyltw%3D%3D
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 7669375
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed