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Strong crystalline field at the Fe site and spin rotation in olivine LiNi0.9957Fe0.01PO4 material by Mössbauer spectroscopy

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5 Author(s)
Kim, Woochul ; Department of Physics, Kookmin University, Seoul 136-702, South Korea ; Chan Hyuk Rhee ; Hyung Joon Kim ; Moon, Seung Je
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The crystal structure of LiNi0.9957Fe0.01PO4 compound has been determined to be orthorhombic by Rietveld refinement method. Temperature dependence of magnetization M shows an anomalous antiferromagnetic behavior. A sudden change in both the magnitude of magnetic hyperfine field and its slope below 11 K suggests that magnetic phase transition related to the spin ordering takes place abruptly. From the result of Mössbauer measurement, it is shown that a strong electric crystalline field of octahedral symmetry including the contribution of spin-orbit coupling and magnetic hyperfine field by space-modulated spin structure is acted to the sites of Fe2+ ions simultaneously at low temperature.

Published in:
Applied Physics Letters  (Volume:96 ,  Issue: 24 )

Date of Publication: Jun 2010

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