SIZE AND FLUCTUATION EFFECTS ON THE DYNAMICS OF LINEAR DOMAIN-WALLS IN AN ISING FERROMAGNET

被引：18

作者：

KOTZLER, J ^{[1
]}

GRAHL, M ^{[1
]}

SESSLER, I ^{[1
]}

FERRE, J ^{[1
]}

机构：

[1] UNIV PARIS 11,PHYS SOLIDES LAB,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.64.2446

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Approaching the Curie temperature of LiTbF4 ellipsoids of thicknesses between 0.5 and 7 mm up to Tc-T=3×10-4Tc, the first clear evidence for critical fluctuations and macroscopic size effects on the domain-wall relaxation is presented. An analog to the Landau-Lifshitz model proposed recently and additional optical data on the domain width suggest associating both phenomena with the existence of linear (Bulaevskii-Ginzburg) walls and with domain branching near the surface. © 1990 The American Physical Society.

引用

页码：2446 / 2449

页数：4

共 25 条

[1] EXPERIMENTAL TEST OF RENORMALIZATION GROUP-THEORY ON UNIAXIAL, DIPOLAR COUPLED FERROMAGNET LITBF4 [J].