Magnetic order in the random-field Ising film Fe0.52Zn0.48F2

被引：21

作者：

Belanger, DP

Wang, J

Slanic, Z

Han, SJ

Nicklow, RM

Lui, M

Ramos, CA

Lederman, D

机构：

[1] OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831

[2] HUGHES RES LABS,MALIBU,CA 90265

[3] CTR ATOM BARILOCHE,RA-8400 SAN CARLOS BARILO,RIO NEGRO,ARGENTINA

[4] UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.54.3420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The extinction-free neutron scattering for a 3.4 mu m epitaxial film of the dilute antiferromagnet Fe0.52Zn0.48F2 has been studied near The (100) antiferromagnetic Bragg point. For the H=0 Bragg scattering we observe the random-exchange Ising model behavior I similar to\t\(2 beta) with beta=0.35. For 0<H less than or equal to 4.5 T the random-field Ising peak intensity vs T has the opposite curvature from the H=0 case near T-c(H). We argue that this has to do with the formation of two weakly interacting, interpenetrating, antiferromagnetically ordered domains with interfaces primarily falling on vacancy sites.

引用

收藏

页码：3420 / 3427

页数：8

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