Complex magnetic susceptibility of uniaxial superparamagnetic particles in a strong static magnetic field

被引：0

作者：

Yu. P. Kalmykov

S. V. Titov

机构：

[1] Russian Academy of Sciences,Institute of Radio Engineering and Electronics

来源：

Physics of the Solid State | 1998年 / 40卷

关键词：

Spectroscopy; Anisotropy; Relaxation Time; Exact Solution; Magnetic Susceptibility;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The magnetic relaxation of a system of single-domain ferromagnetic particles in the presence of a strong static magnetic field directed at an arbitrary angle relative to the particle anisotropy axis is investigated. A system of linear difference-differential equations for the moments (averaged spherical harmonics) is derived without recourse to the Fokker-Planck equation by averaging Gilbert’s equations with a fluctuating field. An exact solution (in terms of matrix continuous fractions) is found for this system. The relaxation times and spectra of the complex magnetic susceptibility are calculated.

引用

页码：1492 / 1499

页数：7