Saturation magnetization and amorphous Curie point changes during the early stage of amorphous-nanocrystalline transformation of a FINEMET-type alloy

被引：29
作者：
Lovas, A
Kiss, LF
Balogh, I
机构：
[1] Tech Univ Budapest, Dept Mech Engn Techn, H-1111 Budapest, Hungary
[2] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2000年 / 215卷
基金：
匈牙利科学研究基金会;
关键词：
nanocrystalline alloys; low-temperature properties; thermomagnetic measurements;
D O I：
10.1016/S0304-8853(00)00189-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Saturation magnetization and thermomagnetic curves were determined on FINEMET-type glassy precursors after different heat treatments below the nanocrystallization temperature. Saturation magnetization (M-s) shows a maximum at the early stage of nanocrystallization, then it drops to below the M-s characteristic for the as-quenched state. Curie temperature of the amorphous phase (T-c(am)) increases continuously due to structural relaxation up to the beginning of nanocrystallization. The results are interpreted on the basis of irreversible structural relaxation as well as Si redistribution between the Fe(Si) nanograins and the intergranular amorphous shell. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：463 / 465
页数：3
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