Magnetic properties of a new 3D-cobalt phosphonate:: Co3(O3PC2H4CO2)2

被引：82
作者：
Rabu, P
Janvier, P
Bujoli, B
机构：
[1] Grp Mat Inorgan, CNRS, UMR 7406, IPCMS, F-67037 Strasbourg, France
[2] Fac Sci & Tech, CNRS, UMR 6513, Synth Organ Lab, F-44322 Nantes 03, France
来源：
JOURNAL OF MATERIALS CHEMISTRY | 1999年 / 9卷 / 06期
关键词：
D O I：
10.1039/a900226j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The magnetic properties of a new cobalt(II) phosphonate have been investigated. The compound is isostructural with the pillared layered metal phosphonates M-3(O3PC2H4CO2), M = Zn, Mn. In this structure, the magnetic transition metal ions are arranged within layers formed by the interconnection of CoO4 tetrahedra and CoO6 octahedra. The ac and de magnetic susceptibilities and magnetization measurements show that Co-3(O3PC2H4CO2)(2) is a canted antiferromagnet at T-N = 15,5 K. Below T-N, the hysteresis cycles exhibit an S shape related to a spin flop effect. The specific heat measurements indicate that large short-range correlations are present above T,in relation with the layered character of the structure.
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页码：1323 / 1326
页数：4
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