Magnetic properties of nanoparticles in Pd/Ni alloys

被引：36

作者：

Nunomura, N ^{[1
]}

Hori, H ^{[1
]}

Teranishi, T ^{[1
]}

Miyake, M ^{[1
]}

Yamada, S ^{[1
]}

机构：

[1] Japan Adv Inst Sci & Technol, Tatsunokuchi, Ishikawa 9231292, Japan

来源：

PHYSICS LETTERS A | 1998年 / 249卷 / 5-6期

关键词：

nanoparticles; magnetization; ESR; spin wave; spin polarization;

D O I：

10.1016/S0375-9601(98)00779-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In order to investigate the alloying effect in Ni/Pd nanoparticles, a special chemical reaction method has been developed to generate a sufficient number of well-conformed Pd ultra-fine particles. Ni concentration dependence on magnetization reveals the existence of a giant magnetic moment effect, where the critical concentration of 6.3 at% is higher than the bulk state one. The higher harmonics intensity of ESR is remarkably enlarged in the alloying particles. The enhanced spectra with Delta S = 2 and the broad spectra arise from the nonlinear effect of the isolated nanoparticles with a long spin-lattice relaxation time. (C) 1998 Elsevier Science B.V.

引用

页码：524 / 530

页数：7

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