NEUTRON-SCATTERING FROM RB2COCMG1-CF4 - OBSERVATION OF 2-DIMENSIONAL MAGNETIC LONG-RANGE ORDER

被引:13
作者
IKEDA, H [1 ]
HUTCHINGS, MT [1 ]
SUZUKI, M [1 ]
机构
[1] AERE,DIV MAT PHYS,HARWELL OX11 0RA,OXFORDSHIRE,ENGLAND
来源
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1978年 / 11卷 / 09期
关键词
D O I
10.1088/0022-3719/11/9/001
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The elastic magnetic scattering from a series of compounds exhibiting two-dimensional Ising-like antiferromagnetic behaviour, Rb2Co cMg1-cF4 (c=1.00, 0.89, 0.85 and 0.70), has been examined below their Neel temperatures. The magnetic scattering from Rb2Co0.7Mg0.3F4 takes the form of almost smooth elastic Bragg rods along the c direction rather than points in reciprocal lattice space, and provides the best approximation yet found to an ideal two-dimensional long-range order. This two-dimensional magnetic long-range order is found to depend strongly on the heat treatment of the crystals and on the concentration of Mg ions, becoming less pronounced as the concentration decreases.
引用
收藏
页码:L359 / L363
页数:5
相关论文
共 7 条
[1]   NEUTRON SCATTERING FROM K2NIF4 - A 2-DIMENSIONAL HEISENBERG ANTIFERROMAGNET [J].
BIRGENEAU, RJ ;
GUGGENHEIM, HJ ;
SHIRANE, G .
PHYSICAL REVIEW LETTERS, 1969, 22 (14) :720-+
[2]   NEUTRON SCATTERING INVESTIGATION OF PHASE TRANSITIONS AND MAGNETIC CORRELATIONS IN 2-DIMENSIONAL ANTIFERROMAGNETS K2NIF4, RB2MNF4, RB2FEF4 [J].
BIRGENEAU, RJ ;
GUGGENHEIM, HJ ;
SHIRANE, G .
PHYSICAL REVIEW B-SOLID STATE, 1970, 1 (05) :2211-+
[3]   SPIN CORRELATIONS NEAR PERCOLATION CONCENTRATION IN 2 DIMENSIONS [J].
BIRGENEAU, RJ ;
COWLEY, RA ;
SHIRANE, G ;
GUGGENHEIM, HJ .
PHYSICAL REVIEW LETTERS, 1976, 37 (14) :940-943
[4]   MAGNETIC PROPERTIES OF K2COF4 AND RB2COF4 - 2-DIMENSIONAL ISING ANTIFERROMAGNETS [J].
BREED, DJ ;
GILIJAMSE, K ;
MIEDEMA, AR .
PHYSICA, 1969, 45 (02) :205-+
[5]   ELASTIC AND QUASI-ELASTIC NEUTRON-SCATTERING FROM K2MNF4 NEAR CRITICAL-POINT [J].
IKEDA, H ;
HIRAKAWA, K .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1972, 33 (02) :393-&
[6]   EXPERIMENTAL STUDY OF 2-DIMENSIONAL ISING ANTIFERROMAGNET RB2COF4 [J].
SAMUELSE.EJ .
PHYSICAL REVIEW LETTERS, 1973, 31 (15) :936-938
[7]   CRITICAL BEHAVIOR OF 2-DIMENSIONAL ISING ANTIFERROMAGNETS K2COF4 AND RB2COF4 [J].
SAMUELSEN, EJ .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1974, 35 (07) :785-793