Numéro
J. Phys. Colloques
Volume 40, Numéro C2, Mars 1979
International Conference on The Applications of The Mössbauer Effect
Page(s) C2-272 - C2-274
DOI https://doi.org/10.1051/jphyscol:1979296
International Conference on The Applications of The Mössbauer Effect

J. Phys. Colloques 40 (1979) C2-272-C2-274

DOI: 10.1051/jphyscol:1979296

MÖSSBAUER EFFECT OF SrLnFeO4 (Ln=La, Pr, Nd)

M. Shimada1, M. Koizumi1, M. Takano2, T. Shinjo3 and T. Takada3

1  The Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan
2  Department of Chemistry, Faculty of Science, Konan University, Kobe, Japan
3  Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu, Japan


Résumé
On a étudié par effet Mössbauer les composés SrLaFeO4, SrPrFeO4 et SrNdFeO4 de structure K2NiF4 entre 4 K et 640 K. Les données combinées relatives aux interactions quadrupolaire et magnétique indiquent qu'il existe un phénomène de réorientation de spin autour de 77 K dans SrPrFeO4 et SrNdFeO4. Le phénomène n'apparaît pas dans SrLaFeO4.


Abstract
The Mössbauer effect has been studied in SrLaFeO4, SrPrFeO4, and SrNdFeO4, with K2NiF4 structure in the temperature range between 4 K and 640 K. The results of the combined magnetic and quadrupole interactions indicated that SrPrFeO4 and SrNdFeO4 exhibited spin re-orientation phenomena at about 77 K. On the other hand, no spin reorientation was found in SrLaFeO4.