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Preparation, Structure, and Magnetic Properties of $La_3MAIS_7$, and $La_3MFeS_7$ (M = Mg, Mn, Fe, Co, Ni, or Zn)

Nanjundaswamy, KS and Gopalakrishnan, J (1983) Preparation, Structure, and Magnetic Properties of $La_3MAIS_7$, and $La_3MFeS_7$ (M = Mg, Mn, Fe, Co, Ni, or Zn). In: Journal of Solid State Chemistry, 49 (1). pp. 51-58.

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Abstract

A series of quaternary metal sulfides of the general formula $La_3MM'S_7$ (M = Mn, Fe, Co; M’ = Al and M = Mg, Mn, Fe, Co, Ni; M’ = Fe) consisting of linear chains of face shared $MS_6$ octahedra and isolated $M’S_4$ tetrahedra has been prepared and studied. The aluminium compounds $La_3MAIS_7$ (M = Mn, Fe, Co) exhibit linear chain antiferromagnetism. Magnetic behavior of other $La_3MFeS_7$ sulfides has been examined in detail. The magnetic susceptibility of $La_3MgFeS_7$ shows that tetrahedral site $Fe^{3+}$ undergoes a transition from S = 5/2 to S = 2 spin state around 150 K.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 16 Jul 2008
Last Modified: 19 Sep 2010 04:47
URI: http://eprints.iisc.ernet.in/id/eprint/15036

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