Magnetic studies on synthetic phosphoferrite Fe 3 2+ (H2O)3(PO4)2 |
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| Authors: | L. F. Moreira L. M. A. Diehl E. C. Torres-Tapia P. H. Domingues E. Mattievich |
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| Affiliation: | (1) Instituto de Física, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, PO Box 68528, 21945 Rio de Janeiro, Brazil |
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| Abstract: | Synthetic crystals of phosphoferrite were studied by Mössbauer spectroscopy for temperatures ranging from 4.2 to 17.5 K. The analysis of the behaviour of the hyperfine fields for the two unequivalent sites near the Néel temperature (17.4 K) allowed the determination of the critical exponent for each site as1=0.171 and2=0.314. |
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