Magnetic susceptibilities of polycrystalline samples of the compounds ANiCl3 (A = RB,NH4, Tl,Cs) and ANiBr3 (A = Rb,Cs) |
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| Authors: | HT Witteveen JAR Van Veen |
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| Institution: | Department of Solid State Chemistry, Gorlaeus Laboratories, State University, Leiden, P.O. Box 75, The Netherlands |
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| Abstract: | The susceptibilities of polycrystalline samples of various antiferromagnetic linear-chain compounds ANiX3 (A =Tl, NH4, Rb, Cs and X = Cl, Br) have been measured in the temperature region 2–200 °K. The results, amongst which the already known data for RbNiCl3 and CsNiCl3, are interpreted in terms of a theory, developed by Weng, for antiferromagnetic Heisenberg linear-chain systems with spin S = 1. By means of Oguchi's Green function theory and the experimentally determined transition temperatures TN the order of magnitude of the ratio between inter- and intra-chain interaction is obtained. |
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