In-situ Lorentz microscopy of Fe85Si2B8P4Cu1 nanocrystalline soft magnetic alloys

被引：27

作者：

Akase, Zentaro ^{[1
,2
]}

Aizawa, Shinji ^{[2
]}

Shindo, Daisuke ^{[1
,2
]}

Sharma, Parmanand ^{[3
]}

Makino, Akihiro ^{[3
,4
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] RIKEN, Ctr Emergent Matter Sci, Wako, Saitama 3510198, Japan

[3] Tohoku Univ, Inst Mat Res, Res & Dev Ctr Ultra High Efficiency Nanocrystalli, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 375卷

基金：

日本学术振兴会;

关键词：

Nanocrystalline soft magnetic alloy; Magnetic domain-wall motion; Lorentz microscopy;

D O I：

10.1016/j.jmmm.2014.08.101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure dependence of magnetic properties of soft magnetic Fe-Si-B-P-Cu nanocrystalline alloys were studied by using in situ Lorentz microscopy in a transmission electron microscope equipped with a magnetizing system. In particular, we investigated in detail motion of magnetic domain walls in heat treated Fe85Si12B6P4Cu1 amorphous ribbons. Smooth motion of domain walls was observed for the optimally heat treated (at 430 degrees C) nano crystalline alloy. Pinning of domain walls was observed for higher-temperature-heat-treated (470 degrees C) ribbons. Both ribbons showed a nanocrystalline structure containing (alpha-Fe crystallites of about 15 nm in size. Electron diffraction patterns indicated that the higher-temperature-heat-treated samples contained boride precipitates, which is considered to cause less smooth domain wall motion. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：10 / 14

页数：5

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