A weakly coupled magnetic sublattice in NaMnFeF6, observed by Mössbauer spectroscopy and magnetic measurements |
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| Authors: | M Tamine Y Calage M Leblanc G Ferey F Varret |
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| Institution: | (1) Laboratoire Mössbauer (U.A. 807), Université du Maine, 72017 LE MANS Cedex, France;(2) Laboratoire des Fluorures et Oxyfluorures Ioniques (U.A. 449), Université du Maine, 72017 LE MANS Cedex, France;(3) Present address: I.N.E.S., Tizi-ouzou, Algeria |
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| Abstract: | The thermal variations of the hyperfine fields of the two iron sites (1a, 2d) of NaMnFeF6 (S.G.P321) indicate a weak magnetic coupling of the (2d) sublattice to the net magnetization, and suggest a magnetic phase transition near 32 K. The Mössbauer and magnetization data are consistent with a ferrimagnetic structure (TN=44.6 ± 0.5 K) with low-temperature compensation point. |
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