Temperature Dependence of ^<55>Mn NMR Frequency on Various Environments in Dilute NiMn Alloys
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概要
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The temperature dependence of "Mn NMR frequency has been studied indilute NiMn alloy from 4.2 to 520 K by the spin echo method. The "Mn NMRsignal associated with the parallel moment to the host consists of three parts:Mn', Mn' and Mn" atoms that have 0, 1 and 2 Mn atoms in their nearest neigh-bours, resr>ectivelv. The temr>erature der>endence of resr>ective NMR frectuenciesv(T) is described bv a common function UP(71/P(0)=0.58X(7'/7CI)"-", whichindicates that each moment behaves as if it has different Curie temperature T..depending on the different environment irrespectively of the Mn concentration indilute Mn system. Ici's of Mn' and Mn' atoms are determined as 610 and 570 K,respectively. v(T) of "Mn in FeMn ..5 o7. and CoMn.z alloys are also describedbv this function, where 7'cu of Mn' atoms in FeMnu.sz and CoMnez alto>'s are='- 505 and 525 K, respectively. The ratios of the effective exchange interactionparameters are inferred directly from these values of 7'CI.
- 社団法人日本物理学会の論文
- 1981-02-15
著者
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Yamagata Hideki
Department of Physics, Faculty of Science, Kochi University
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Yamagata Hideki
Department Of Material Science Faculty Of Science Kochi University
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Yamagata Hideki
Department Of Physics Faculty Of Science Kochi University
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