OBSERVATION OF DYNAMIC SCALING OF MAGNETIC HYSTERESIS IN ULTRATHIN FERROMAGNETIC FE/AU(001) FILMS

被引：189

作者：

HE, YL

WANG, GC

机构：

[1] Department of Physics, Rensselaer Polytechnic Institute, Troy

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.70.2336

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dynamic scaling of magnetic hysteresis in a few monolayer thick Fe/Au(001) films was studied by using surface magneto-optic Kerr effect. For low values of the frequency (OMEGA) and amplitude (H0) of an applied magnetic field, the hysteresis loss scales as A is-proportional-to H0(alpha)OMEGA(beta) with alpha=0.59 +/- 0.07 and beta=0.31 +/- 0.05. Our results confirm a recently proposed scaling law. The exponents are consistent with recent numerical simulations of the hysteresis of 2D Ising spins and suggest that the hysteresis dynamics in ultrathin ferromagnetic films belong to a dynamic Ising universality class.

引用

页码：2336 / 2339

页数：4

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