MOSSBAUER STUDY INDICATING MAGNETIC CLUSTERS IN FENIMN-REENTRANT SPIN-GLASS ALLOYS

被引：3
|
作者：
FRICKE, M
HESSE, J
机构：
[1] Institut für Metallphysik und Nukleare Festkörperphysik der Techn. Univ, Braunschweig, D-3300
来源：
HYPERFINE INTERACTIONS | 1992年 / 70卷 / 1-4期
关键词：
D O I：
10.1007/BF02397522
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Fe-57 Mossbauer measurements on the reentrant spin glass system (Fe.65Ni.35)1-x Mn(x) are analysed under the extreme assumption that only relaxation determines the shape of the spectra. A plain model of a fluctuating hyperfine field based on the Blume-Tjon-theory /1/ is used for the evaluation. As a result the increase of the fluctuation frequencies with increasing temperature yields in lowering of the relative magnetization. Noticeable are some typical kinks of the magnetization at the reentrant temperatures. Our evaluation results in fluctuation frequencies from 10(7) Hz to 10(9) Hz, which indicates, if true, that the reason of the fluctuations seems not to be single spins but larger collective spin groups (clusters).
引用
收藏
页码：1105 / 1108
页数：4
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