MAGNETIC BEHAVIOR OF MANGANESE IN COMPLEX OXIDES WITH PEROVSKITE AND PYROCHLORE STRUCTURE

14 сентября 2018
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Контактные данные автора публикации CHEZHINA N., OSIPOVA A., PIIR I.
Ссылка на публикацию в интернете onlinelibrary.wiley.com/doi/10.1002/1521-396X(200202)189:3<1069::AID-PSSA1069>3.0.CO;2-4/pdf

Аннотация

Magnetic susceptibility of diluted solid solutions of manganese containing complex oxides with perovskite and pyrochlore structure was studied. Manganese behavior in a complex oxide was shown to depend on the type of the structure and on the nature of diamagnetic atoms comprised in the complex oxide. Magnetic dilution of “colossal magnetoresistor” La0.67Ca0.33MnO3 gives drastically different results compared to other complex oxides. Superexchange interactions in small clusters of manganese atoms in this oxide appear to be characterized by a temperature dependent exchange parameter, which correlates with a low temperature phase transition.
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