Magnetic properties of a new 3D-cobalt phosphonate: Co3(O3PC2H4CO2)2
Magnetic properties of a new 3D-cobalt phosphonate: Co3(O3PC2H4CO2)2
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DOI：
10.1039/a900226j
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发表时间：
1999
影响因子：
--
通讯作者：
P. Rabu;P. Janvier;B. Bujoli
中科院分区：
文献类型：
--
作者：
P. Rabu;P. Janvier;B. Bujoli
研究了一种新型磷酸钴（II）的磁性能。该化合物与柱状层状金属磷酸盐m3 (o3pc2h4co2) 2呈同结构，M=Zn, Mn。在这种结构中，磁性过渡金属离子排列在由coco4四面体和coco6八面体互连形成的层内。交直流磁化率和磁化率测量表明，在t_n =15.5 K时，co3 (o3pc2h4co2) 2是倾斜反铁磁体。在tn以下，迟滞周期呈现与自旋翻转效应相关的S形。比热测量结果表明，在tn以上与结构的层状特征存在较大的短期相关性。
The magnetic properties of a new cobalt(II) phosphonate have been investigated. The compound is isostructural with the pillared layered metal phosphonates M 3 (O 3 PC 2 H 4 CO 2 ) 2 , M=Zn, Mn. In this structure, the magnetic transition metal ions are arranged within layers formed by the interconnection of CoO 4 tetrahedra and CoO 6 octahedra. The ac and dc magnetic susceptibilities and magnetization measurements show that Co 3 (O 3 PC 2 H 4 CO 2 ) 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 N in relation with the layered character of the structure.