EVIDENCE FOR A NEW STATE IN ALUMINOSILICATE SPIN-GLASSES IN VERY WEAK MAGNETIC-FIELDS

被引:15
作者
KRUSINELBAUM, L
RAGHAVAN, R
WILLIAMSON, SJ
机构
[1] Department of Physics, New York University, New York
关键词
D O I
10.1103/PhysRevLett.42.1762
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The dc magnetic susceptibility of CoO•Al2O3•SiO2 (14.3 at.% Co) below Tg=5.7 K decreases markedly with reduction in field for H<150 mOe. The observation of this field sensitivity, equilibrium behavior, and a sharp cusp at Tg in this very weak field range is evidence for a cooperative transition at Tg below which correlations extend over many spins. This state is characterized by an energy scale per spin comparable to that of magnetic dipolar coupling between nearest-neighbor spins. © 1979 The American Physical Society.
引用
收藏
页码:1762 / 1765
页数:4
相关论文
共 27 条
[21]   REMANENT MAGNETIZATION OF COO.A12O3.SIO2 GLASS - 1OG T LAW [J].
RECHENBERG, HR ;
BIEMAN, LH ;
HUANG, FS ;
GRAAF, AMD .
JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) :1638-1639
[22]  
RECHENBERG HR, 1978, J PHYS PARIS C, V39, P934
[23]  
RHYNE JJ, 1974, 18 AIP C P, P651
[24]  
THOLENCE JL, 1973, THESIS U GRENOBLE
[25]  
THOLENCE JL, 1974, J PHYS-PARIS, V35, P229
[26]   MAGNETIC-PROPERTIES OF COBALT AND MANGANESE ALUMINOSILICATE GLASSES [J].
VERHELST, RA ;
KLINE, RW ;
GRAAF, AMD ;
HOOPER, HO .
PHYSICAL REVIEW B, 1975, 11 (11) :4427-4435
[27]   SPIN GLASS WITH NONRANDOM INTERACTIONS [J].
VILLAIN, J .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (10) :1717-1734