L10-FePt nanoparticles in a magnetically isolated state

被引：15

作者：

Momose, SM ^{[1
]}

Kodama, H ^{[1
]}

Ihara, N ^{[1
]}

Uzumaki, T ^{[1
]}

Tanaka, A ^{[1
]}

机构：

[1] Fujitsu Labs Ltd, Adv Magnet Recording Lab, Atsugi, Kanagawa 2430197, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2003年 / 42卷 / 10B期

关键词：

FePt nanoparticle; L1(0)-FePt; magnetic recording; thermal annealing; magnetic relaxation;

D O I：

10.1143/JJAP.42.L1252

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A novel technique for fabricating a L1(0)-FePt nanoparticle film in a magnetically isolated state is reported. An organic mixture, which stabilizes colloids, inhibits the nanoparticles from forming agglomerations during annealing at up to 800degreesC, and the resulting film shows the included FePt nanoparticles to be L1(0) phase and magnetically isolated. Such a film indicates a steep decline in coercivity with the temperature increase whereas the nanoparticles have a large uniaxial anisotropy energy density because of thermal relaxation that corresponds to the particle size.

引用

页码：L1252 / L1254

页数：3

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