Determination of domain wall energy and critical single-domain particle size based on domain structure observations of ThMn12-type magnetic particles

被引：8

作者：

Kobayashi, K. ^{[1
]}

Urushibata, K. ^{[1
]}

Kuno, T. ^{[1
]}

Suzuki, S. ^{[1
]}

Sakuma, N. ^{[2
,3
]}

Shoji, T. ^{[2
,3
]}

Kato, A. ^{[2
,3
]}

机构：

[1] Shizuoka Inst Sci & Technol, Fukuroi 4378555, Japan

[2] Toyota Motor Co Ltd, Susono 4101193, Japan

[3] Tech Res Assoc Magnet Mat High Efficiency Motors, Higashifuji Branch, Susono 4101193, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 513卷

关键词：

ThMn12-type magnets; Domain structure; Domain wall energy; Critical single-domain particle size; Exchange stiffness; Exchange integral; STABILITY;

D O I：

10.1016/j.jmmm.2020.167244

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The domain structures of standard Sm2Fe17N3 particles and three almost alpha-(Fe,Co)-free magnetic compounds with a ThMn12-type structure, namely, (Sm0.9Zr0.1)(Fe0.8Co0.2)(11.3)Ti-0.(7), (Nd0.8Zr0.2)(Fe0.9Co0.1)(11.)3Ti0.7N1.5, and Nd(Fe0.8Co0.2)(11)MoN1.3, were examined via magnetic force microscopy. Using the observed domain widths (d) and particle sizes (D) in conjunction with classical equations, the domain wall energy (gamma), critical single-domain particle size (R-c), exchange stiffness (A(ex)), and exchange integral (J(ij)) of the compounds were calculated.

引用

页数：7

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