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A Temperature‐Dependent 119 Sn and 57 Fe Mössbauer Study of Malayaite, CaSnSiO 5 :Fe
Author(s) -
Niemeier D.,
Mehner H.,
Bismayer U.,
Becker K. D.
Publication year - 1999
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199902)211:2<581::aid-pssb581>3.0.co;2-m
Subject(s) - quadrupole , context (archaeology) , mössbauer spectroscopy , tin , spectral line , chemistry , analytical chemistry (journal) , anomaly (physics) , liquid nitrogen , ion , ferric , crystallography , atomic physics , condensed matter physics , physics , inorganic chemistry , paleontology , organic chemistry , chromatography , astronomy , biology
We report on a temperature‐dependent Mössbauer study of natural and synthetic malayaite, CaSnSiO 5 . 119 Sn spectra have been measured between liquid nitrogen temperatures and 1310 K. The 119 Sn Mössbauer shift is found to show a significantly reduced temperature dependence if compared with predictions for the second‐order Doppler contribution. In iron doped malayaite, the two dominating 57 Fe subspectra are attributed to ferric ions located on Sn and Ca sites. The temperature‐dependent spectra of 119 Sn and 57 Fe are discussed in context with the structural anomaly at about 500 K reported by Groat et al. From comparison of quadrupole interactions of tin and iron, an estimate of the nuclear quadrupole moment of 119 Sn is derived as Q = 0.13 b which is in good agreement with recent studies.