TRANSITION TO LONG-RANGE ORDER IN THE 3-DIMENSIONAL RANDOM-FIELD ISING-MODEL

被引：52

作者：

HILL, JP

THURSTON, TR

ERWIN, RW

RAMSTAD, MJ

BIRGENEAU, RJ

机构：

[1] SANDIA NATL LABS,ALBUQUERQUE,NM 87185

[2] NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.66.3281

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report both synchrotron-x-ray and neutron-diffraction studies of the magnetic ordering in a crystal of Mn0.75Zn0.25F2 in a magnetic field. The neutron experiments reproduce previous results showing the establishment of a short-range domain state on cooling in a field. Remarkably, the magnetic x-ray scattering shows that within a few microns of the surface there is a second-order transition to true long-range order on field cooling. Implications of these results are discussed.

引用

页码：3281 / 3284

页数：4

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