DIPOLAR INTERACTIONS AND THE MAGNETIC-BEHAVIOR OF 2-DIMENSIONAL FERROMAGNETIC SYSTEMS

被引：59

作者：

STAMPS, RL

HILLEBRANDS, B

机构：

[1] 2. Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.44.12417

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple model is presented for spin-wave excitations and the low-temperature magnetization of ferromagnetic ultrathin films. The films are assumed to be quasi-two-dimensional arrays of fixed magnetic moments and both exchange and dipolar interactions are taken into account. Discrete and continuous models are used to examine the wave-vector dependence of the spin-wave frequency in the long-wavelength limit. This spin-wave theory can be used to calculate the temperature dependence of the saturation magnetization in the limit of small fluctuations. The role of dipolar interactions is examined for a single monolayer and for thin films consisting of two or three atomic layers.

引用

页码：12417 / 12423

页数：7

共 16 条

[1]

BENSON H, 1969, PHYS REV B, V18, P839

[2]

DEMOKRITOV SO, 1989, ZH EKSP TEOR FIZ, V68, P1277

[3]

DEWAMES RE, 1972, PROG SURF SCI, V2, P233

[4]

ERICKSON RP, IN PRESS PHYS REV B