Grain size refinement in nanocrystalline Hitperm-type glass-coated microwires

被引：11
|
作者：
Talaat, A. [1 ,2 ]
del Val, J. J. [1 ]
Zhukova, V. [1 ,2 ]
Ipatov, M. [1 ]
Klein, P. [3 ]
Varga, R. [3 ]
Gonzalez, J. [1 ]
Churyukanova, M. [5 ]
Zhukov, A. [1 ,2 ,4 ]
机构：
[1] Univ Basque Country, Dept Fis Mat, San Sebastian 20018, Spain
[2] Univ Basque Country, EUPDS, Dept Fis Aplicada, San Sebastian 20018, Spain
[3] Univ Pavol Jozef Safarik, Fac Sci, Inst Phys, Pk Angelinum 9, Kosice 04154, Slovakia
[4] Ikerbasque, Basque Fdn Sci, E-48011 Bilbao, Spain
[5] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 406卷
关键词：
Nanocrystalline microwires; Grain size refinement; Stress diffusion; Domain wall dynamics; GIANT MAGNETOIMPEDANCE; MAGNETIC-PROPERTIES; MAGNETOELASTIC ANISOTROPY; METALLIC GLASSES; ALLOYS; CRYSTALLIZATION; DEPENDENCE; KINETICS; FINEMET; FIELD;
D O I：
10.1016/j.jmmm.2015.12.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a new-Fe38.5Co38.5B18Mo4Cu1 Hitperm glass-coated microwires obtained by Taylor-Ulitovsky technique with nanocrystalline structure consisting of about 23 nm of BCC alpha-FeCo and an amorphous precursors in as-prepared samples. Annealing resulted in a considerable decrease of such nano-grains down to (11 nm). Obtained results are discussed in terms of the stress diffusion of limited crystalline growth and the chemical composition. Rectangular hysteresis loops have been observed on all annealed samples that are necessary conditions to obtain fast domain wall propagation. An enhancement of the domain wall velocity as well as mobility after annealing has been obtained due to the structural relaxation of such grains with positive magnetostriction. These structure benefits found in the nanocrystalline Hitperm glass-coated microwires are promising for developing optimal magnetic properties. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：15 / 21
页数：7
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