Magnetic properties of some Cu-containing phosphates

被引:12
作者
Belik, AA [1 ]
Azuma, M
Takano, M
机构
[1] Kyoto Univ, Chem Res Inst, Uji, Kyoto 6110011, Japan
[2] Japan Sci & Technol Corp, JST, PRESTO, Kawaguchi, Saitama 3320012, Japan
关键词
copper phosphates; Heisenberg antiferromagnet; one-dimensional system;
D O I
10.1016/j.jmm.2003.12.009
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Magnetic susceptibility and specific heat measurements are presented for some Cu-containing phosphates with different copper frameworks, M2Cu(PO4)(2) (M = Sr and Ba: linear 1D uniform chains), BaCuP2O7 (double 1D uniform chains), MCuP2O7 (M = Ca, Sr, and Pb: zig-zag 1D uniform chains), and Sr9.1Cu1.4(PO4)(7) (isolated Cu2+ ions). We observed short- and long-range magnetic ordering in these compounds in which the main Cu-Cu interactions are transferred through PO4 groups. In M2Cu(PO4)(2) and BaCuP2O7, J/k(B) values of about 100-140 K and k(B) TN/J< 1% were obtained. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:937 / 938
页数:2
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