Ferromagnetism in triangular cobalt(II) layers: comparison of cobalt dihydroxide and cobalt nitrate hydroxide (Co2(NO3)(OH)3)
Ferromagnetism in triangular cobalt(II) layers: comparison of cobalt dihydroxide and cobalt nitrate hydroxide (Co2(NO3)(OH)3)
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三角形钴(II) 层中的铁磁性：二氢氧化钴和氢氧化硝酸钴 (Co2(NO3)(OH)3) 的比较
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
M. Drillon
中科院分区：
文献类型：
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作者：
P. Rabu;S. Angelov;P. Legoll;M. Belaiche;M. Drillon
本文研究了两种层状母体Co(OH) 2 和Co 2 (NO 3 )(OH) 3 的结构和磁性能之间的相关性，这两种母体化合物的主要区别在于层间距离。磁化强度、磁化率和比热的测量结果表明，在几乎相同的温度下发生了相变，这可以通过钴 (II) 离子之间强的各向异性面内相互作用来解释。使用三角形二维晶格的高温超导展开和数值计算，Co(OH) 2 的面内铁磁相互作用为 J=9.2 K，Co 2 (NO 3 )(OH) 3 的面内铁磁相互作用为 7.4 K
This paper deals with correlations between structural and magnetic properties of two layered parent compounds, Co(OH) 2 and Co 2 (NO 3 )(OH) 3 , which mainly differ by their interlayer distances. Measurements of magnetization, magnetic susceptibility, and specific heat show the occurrence of phase transitions at nearly the same temperatures, and this is explained by strong anisotropic in-plane interactions between cobalt(II) ions. Using HTS expansion for a triangular 2D lattice and numerical computations, the in-plane ferromagnetic interactions are shown to be J=9.2 K for Co(OH) 2 and 7.4 K for Co 2 (NO 3 )(OH) 3