Magnetization,Mössbauer and neutron studies of α- and β-LiMnFeF<sub>6</sub>; Evidence of idle spin behaviour in a ferrimagnet期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Magnetization,Mössbauer and neutron studies of α- and β-LiMnFeF₆; Evidence of idle spin behaviour in a ferrimagnet

Authors:	G. Courbion R. De Pape J. Teillet F. Varret J. Pannetier

Affiliation:	Laboratoire des Fluorures et Oxyfluorures Ioniques (ERA CNRS 609), Université du Maine, 72017 Le Mans Cédex, France;Laboratoire de Spectrométrie Mössbauer (ERA CNRS 682), Université du Maine, 72017 Le Mans Cédex, France;Institut Laue Langevin, 156X Centre de Tri, 38042 Grenoble Cédex, France

Abstract:	The trigonal phases α- and β-LiMnFeF₆ have been investigated by neutron diffraction, magnetization measurements, remanent magnetization and Mössbauer spectroscopy in an external field. Below 158 K, α-LiMnFeF₆ is antiferromagnetic, with the Mn and Fe spins aligned antiparallel along the c axis. Below 113 K, the β-phase is ferrimagnetic, with the Mn(3e) and Fe(2d) spins aligned antiparallel along the c axis. Fe(1a) is weakly coupled to the net magnetization and behaves as an “idle spin”. The data are consistently analysed and discussed with respect to the connecting mode of the MF₆ octahedra.

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