Low temperature magnetic transitions in chain germanates

Studies of the 57Fe Mossbauer effect in monoclinic FeGeO 3 between 4 K and 293 K revealed a magnetically ordered structure below 53 K. A magnetic transition was found at 14 K. Between 15 K and 53 K, the alignment of the Fe 2+ magnetic moments is apparently antiferromagnetic. Below 14 K, the moments...

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Bibliographic Details
Published in:Solid state communications 1995-08, Vol.95 (6), p.405-408
Main Authors: Novikov, G.V., Sipavina, L.V., Hafner, S.S.
Format: Article
Language:English
Subjects:
insulators
magnetically ordered materials
nuclear resonances
phase transitions
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Summary:Studies of the 57Fe Mossbauer effect in monoclinic FeGeO 3 between 4 K and 293 K revealed a magnetically ordered structure below 53 K. A magnetic transition was found at 14 K. Between 15 K and 53 K, the alignment of the Fe 2+ magnetic moments is apparently antiferromagnetic. Below 14 K, the moments change their orientation abruptly to an apparently canted structure. Orthorhombic FeGeO 3 was also found to be magnetically ordered below 49–50 K, revealing a similar transition at 10–13 K as in the monoclinic phase.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(95)80090-5