Magnetic properties of R3Co8Sn4 (R = Y, Gd)
Magnetic properties of R3Co8Sn4 (R = Y, Gd)
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DOI：
10.1016/s0304-8853(00)00471-6
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发表时间：
2000-10-01
影响因子：
2.7
通讯作者：
Merlo, F
中科院分区：
文献类型：
--
作者：
Canepa, F;Napoletano, M;Merlo, F
研究了金属间相R3Co8Sn4 （R = Y, Gd）的磁性能。这两种化合物的转变温度分别为61.5 K和102.5 K，其顺序为铁(Y)和铁磁性（Gd）。在顺磁区，y -化合物遵循居里-魏斯定律，mu = 0.98 mu(B)/Co, θ (P) = 62.0 K，而Gd，Co,Sn， Sn等则表现出更复杂的行为，为典型的铁磁物质。在分子场理论的框架下分析实验数据，可以得到Go-Co (J（Co-Co) = 83k(B)）和Gd-Co (J（Gd-Co) = 11k(B)）相互作用的交换参数。(C) 2000 Elsevier Science B.V.版权所有
The magnetic properties of the intermetallic phases R3Co8Sn4 (R = Y, Gd) are presented. The two compounds order ferro- (Y) and ferri-magnetically (Gd) with transition temperatures of 61.5 and 102.5 K, respectively. In the paramagnetic region, the Y-compound follows the Curie-Weiss law with mu = 0.98 mu(B)/Co and theta(P) = 62.0 K while a more complex behaviour, typical of a ferrimagnetic substance, is observed for Gd,Co,Sn,. The experimental data, analysed in the framework of the molecular field theory, allow to obtain the exchange parameter for the Go-Co (J(Co-Co) = 83k(B)) and of the Gd-Co (J(Gd-Co) = 11k(B)) interactions. (C) 2000 Elsevier Science B.V. All rights reserved.