NEUTRON SCATTERING FROM K2NIF4 - A 2-DIMENSIONAL HEISENBERG ANTIFERROMAGNET

被引：119

作者：

BIRGENEAU, RJ

GUGGENHEIM, HJ

SHIRANE, G

机构：

[1] Bell Telephone Laboratories, Murray Hill

[2] Brookhaven National Laboratory, Upton

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 22卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.22.720

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The quasielastic magnetic scattering from K2NiF4 over the temperature range from 97.2°K to at least 200°K is found to correspond to reciprocal lattice rods rather than points thus giving the first concrete evidence of the two-dimensional character of K2NiF4. At 97.1°K the crystal undergoes an extremely sharp phase transition to long-range order in three dimensions. From 97.0°K to 5°K the sublattice magnetization follows a (97.1-T)β law with β=0.15. © 1969 The American Physical Society.

引用

页码：720 / +

页数：1

共 11 条

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