LOW-TEMPERATURE DYNAMICS OF A DILUTED ISING ANTIFERROMAGNET

被引：17

作者：

LEDERMAN, M ^{[1
]}

SELINGER, JV ^{[1
]}

BRUINSMA, R ^{[1
]}

HAMMANN, J ^{[1
]}

ORBACH, R ^{[1
]}

机构：

[1] CENS,DEPT RECH ETAT CONDENSE ATOM & MOLEC,SERV PHYS ETAT CONDENSE,F-91190 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.68.2086

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the low-temperature dynamics of a diluted Ising antiferromagnet (Fe0.46Zn0.54F2) over a wide range of magnetic fields. By measuring the magnetization through a number of cooling protocols, we deduce the density of antiferromagnetic domain walls, which can be compared with predictions of the random-field Ising model (RFIM). In both magnetization-relaxation and field-cycling experiments, we find a region of the (H,T) phase diagram in which the dynamic behavior is consistent with the RFIM, as well as a theoretically unexpected region of frozen dynamics.

引用

页码：2086 / 2089

页数：4

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