1D FERRIMAGNETISM IN COPPER(II) TRIMERIC CHAINS - SPECIFIC-HEAT AND MAGNETIC-BEHAVIOR OF A3CU3(PO4)4 WITH A = CA, SR

被引：56

作者：

DRILLON, M

BELAICHE, M

LEGOLL, P

ARIDE, J

BOUKHARI, A

MOQINE, A

机构：

[1] ENS, PHYSICOCHIM MAT LAB, TAKADDOUM, MOROCCO

[2] FAC SCI RABAT, CHIM SOLIDE APPL LAB, RABAT, MOROCCO

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 128卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(93)90860-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper deals with the magnetic properties (specific heat, magnetization and magnetic susceptibility) of copper(II) phosphates, namely A3Cu3(PO4)4 with A = Ca, Sr, exhibiting one-dimensional array of [Cu3] trimers. Both systems show above 1 K the typical features of ID ferrimagnets, namely a minimum of chiT = f(T) and a divergence upon cooling. Such a behavior is explained by means of a two-sublattice spin model involving criss-cross exchange couplings which promote a magnetic ground state. The results are discussed by assuming isotropic (Heisenberg) or anisotropic (Ising) interactions, and correlated to structural data.

引用

页码：83 / 92

页数：10

共 16 条

[1] THE CRYSTAL-STRUCTURE OF CA3CU3(PO4)4 [J].