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

被引：54
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
收藏
页码：3281 / 3284
页数：4
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