Monodisperse face-centred tetragonal FePt nanoparticles with giant coercivity

被引：141

作者：

Elkins, K ^{[1
]}

Li, D ^{[1
]}

Poudyal, N ^{[1
]}

Nandwana, V ^{[1
]}

Jin, ZQ ^{[1
]}

Chen, KH ^{[1
]}

Liu, JP ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Arlington, TX 76019 USA

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2005年 / 38卷 / 14期

关键词：

D O I：

10.1088/0022-3727/38/14/003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Monodisperse face-centred tetragonal (fct) FePt nanoparticles with high magnetic anisotropy and, therefore, high coercivity have been prepared via a new heat treatment route. The as-synthesized face-centred cubic FePt nanoparticles were mixed with salt powders and annealed at 700 degrees C. The salts were then removed from the particles by washing the samples in water. Monodisperse fct FePt particles were recovered with the particle size and shape being retained. Coercivity of the isolated particles up to 30 kOe at room temperature has been obtained.

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页码：2306 / 2309

页数：4

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