Magnetic Properties of FeCl_3-Graphite Compounds. : I. Mossbauer Studies

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概要

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• Magnetic properties of layered compounds of graphite, in which a FeCl_3 layer is separated by one (the 1st stage) or two layers (the 2nd stage) of graphite were studied by Mossbauer effect. The easy directions of spins were within the basal plane for the both stages, which were determined by measuring relative intensities of Zeeman components on samples of well orientated c-axis. The temperature dependence of internal magnetic fields could be described according to the Weiss theory for S=5/2 normalized to H_n(0K)=500kOe and with T_N=4K. The coexistence of a central line and Zeeman lines, and their temperature dependent intensities could be interpreted as the superparamagnetic system with clusters of one molecular thickness and mean diameter 〓1000Å. The observed quadrupole splittings 0.20mm/sec for the 1st stage and 0.25mm/sec for the 2nd stage were considered as due to trigonal distortions from the regular octahedrons of FeCl_3 molecule.

• 社団法人日本物理学会の論文
• 1974-02-15

著者

• Tsujikawa Ikuji

  Department Of Chemisity Faculty Of Science Kyoto University

• Ohhashi Kentaro

  Department Of Chemistry Faculty Of Science Kyoto University

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