Atomic Magnetic Moment and Exchange Interaction between Mn Atoms in Intermetallic Compounds in Mn-Ge System
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Magnetic properties of four intermetallic compounds, c, e., tc and t7, in manganese-germanium system are studied by means of magnetization measurement and neutrondiffraction. Exchange coefficients of the interaction between Mn atoms in the compounds are estimated quantitatively using the molecular field approximation, basedon the localized moment model. The exchange coefficient between Mn atoms ondifferent sublattices is found to depend largely on the interatotnic distance: The ex-change coefficient is found to be negative for smaller interatomic distances thanr.=2.9 A and positive for larger distances. The magnitude of atomic magnetic mo-ment in the compounds is consistently discussed using the Pauling valence, after M6riand Mitsui (J. Phys. Soc. Jpn. 25 (1968) 82).[intermetallic compounds, Mn-Ge system, magnetic properties, exchange ]l coefficients, magnetic moment, e.-Mn.Gel
- 社団法人日本物理学会の論文
- 1990-01-15
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