ROLE OF SPIN AND PHONON FLUCTUATIONS IN THE TEMPERATURE DEPENDENCES OF MAGNETIC-PROPERTIES OF IRON-NICKEL INVAR ALLOY

被引：3
|
作者：
SILIN, VP [1 ]
ZVEREV, VM [1 ]
THON, M [1 ]
WAGNER, D [1 ]
机构：
[1] RUHR UNIV BOCHUM,W-4630 BOCHUM 6,GERMANY
来源：
PHYSICS LETTERS A | 1991年 / 154卷 / 1-2期
关键词：
D O I：
10.1016/0375-9601(91)90427-A
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present an approach to the thermal magnetic properties of itinerant electron ferromagnets that takes account of spin and phonon fluctuations simultaneously. The comparison of both fluctuation contributions is given in the case of the Invar alloy Fe0.65Ni0.35. For this alloy we demonstrate the necessity of taking into account the changes due to the magnetization not only of the bulk modulus but also of the shear modulus in the description of phonon fluctuations and also the possibility of the description of spin fluctuations in the frame of the paramagnon model of a weak itinerant ferromagnet.
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页码：45 / 50
页数：6
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