Thermal dependence of coercivity in soft magnetic nanocrystals

被引：97
作者：
Hernando, A
Marin, P
Vazquez, M
Barandiaran, JM
Herzer, G
机构：
[1] CSIC, IMA, Madrid, Spain
[2] CSIC, ICMM, Madrid, Spain
[3] Univ Basque Country, Fac Ciencias, E-48080 Bilbao, Spain
[4] Vacuumschmelze GmbH, D-63412 Hanau, Germany
来源：
PHYSICAL REVIEW B | 1998年 / 58卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.58.366
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An important group of soft magnetic nanocrystals is that formed by alpha-Fe(Si) nanocrystals (around 10-nm grain size) embedded in a residual amorphous matrix. A simple phenomenological theory that takes into account the two-phase character based on the random anisotropy approximation has been developed. The percentage of crystallized material x is taken into account and a quantitative expression for the thermal dependence of coercivity, considering the two-phase character of the samples, has been obtained. The good fit between the experimental curves and the theoretical ones of nanocrystalline Fe73.5Si13.5B9Cu1Ta3 samples with different crystallized volume fraction is discussed. [S0163-1829(98)02125-0].
引用
收藏
页码：366 / 370
页数：5
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