Studies of doped LaMnO3 samples prepared by citrate combustion process.

Autor: Dimri, M. Chandra, Khanduri, H., Mere, A., Stern, R., Singh, Biswas, Das
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Zdroj: AIP Conference Proceedings; 2018, Vol. 1942 Issue 1, p1-1, 1p
Abstrakt: La0.95A0.05MnO3 (where A=Na, Sr, Er, Dy and Ce) powder samples were synthesized by chemical solution route and the magnetic and structural properties are reported in this paper. The pervoskite structure was confirmed from X-ray diffraction patterns and Raman spectra at room temperature in all of these doped samples. Curie transition temperatures in doped LaMnO3 bulk samples were around 250K, which are much higher than the ideal value (∼140 K) in undoped samples. The increase in the magnetic transition temperatures can be related to non-stoichiometry and cation vacancies created due to higher valence substitutions for the univalent La1+ ions. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index