Magnetic properties of arrays of interacting Co nanocrystals

被引：50

作者：

Spasova, M

Wiedwald, U

Ramchal, R

Farle, M

Hilgendorff, M

Giersig, M

机构：

[1] Tech Univ Braunschweig, Inst Halbleiterphys & Opt, D-38106 Braunschweig, Germany

[2] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 240卷 / 1-3期

关键词：

magnetic nanoparticles; self-assembly; ferromagnetic resonance; anisotropy fields; remanent magnetization;

D O I：

10.1016/S0304-8853(01)00723-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Monodisperse Co FCC nanocrystals with 12 nm diameter were self-assembled into regular quasi-two-dimensional triangular periodic arrays on carbon substrates from a toluene-based colloidal suspension. At 300 K the regular arrays show a collective magnetic behaviour due to dipolar coupling. A remanent magnetization with an easy axis in the film-plane and an uniaxial in-plane anisotropy field of 0.037T were determined by SQUID magnetometry and angular dependent ferromagnetic resonance. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：40 / 43

页数：4

共 12 条

[1] Ferromagnetic resonance of ultrathin metallic layers [J].