The effect of thermal treatment on the magnetic properties of Ge-doped FeNbB alloys

被引：0
|
作者：
X. Mao
Z. Han
F. Xu
W. Gao
B. Gu
Y. Du
机构：
[1] Nanjing University,National Laboratory of Solid State Microstructure, Department of Physics
[2] Jimei University,School of Science
来源：
Applied Physics A | 2005年 / 81卷
关键词：
Permeability; Crystallization; Thin Film; Magnetic Property; Operating Procedure;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effects of Ge doping on the magnetic properties of nanocrystalline FeNbB ribbons are investigated. For amorphous Fe80Nb10Ge3B7 alloy, three crystallization processes are observed when heated from room temperature to 1173 K. At 973 K, a harder magnetic phase is formed, which brings about a constricted hysteresis loop. A large increase of relaxation frequency and a dramatic drop of permeability of 973 K-annealed Fe80Nb10Ge3B7 alloy are observed. The presence of Nb is essential for the nanocrystallization of α-Fe grains. If Nb is replaced by Ge completely, the thermal treatment will lead to the formation of coarse-grained Fe3Ge phase rather than nanosized α-Fe grains. The coarse-grained Fe3Ge results in a remarkable drop in magnetic softness.
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页码：839 / 842
页数：3
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