SPIN-WAVE BEHAVIOR IN THE MAGNETIZATION OF AN AMORPHOUS FERROMAGNET GD67NI33

被引：7
|
作者：
NAKAI, I [1 ]
FUKAGAWA, T [1 ]
机构：
[1] OKAYAMA UNIV, FAC SCI, DEPT PHYS, OKAYAMA 700, JAPAN
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 07期
关键词：
AMORPHOUS GD67NI33 FERROMAGNET; MAGNETIZATION; CURIE-WEISS LAW; SPIN WAVE T(3/2) LAW; LOCALIZED ELECTRONS;
D O I：
10.1143/JPSJ.62.2456
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have made precise measurements of the magnetization on an amorphous ferromagnet Gd67Ni33 below 300 K in fields up to 5.27 T. The magnetization obeys the simple spin wave T3/2 law below about 90 K. The spin wave stiffness constant thus obtained is independent of magnetic fields and temperatures. The susceptibility follows the Curie-Weiss law above about 220 K. The amorphous Gd67Ni33 alloy is a typical example of Heisenberg ferromagnet such as amorphous Gd68Cu32 reported previously.
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页码：2456 / 2461
页数：6
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