Evidence of non-stoichiometry effects in nanometric manganite perovskites: influence on the magnetic ordering temperature

0375110 - FZÚ 2012 RIV GB eng J - Článek v odborném periodiku
Epherre, R. - Pepin, C. - Penin, N. - Duguet, E. - Mornet, S. - Pollert, Emil - Goglio, G.
Evidence of non-stoichiometry effects in nanometric manganite perovskites: influence on the magnetic ordering temperature.
Journal of Materials Chemistry. Roč. 21, č. 38 (2011), s. 14990-14998. ISSN 0959-9428
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: manganite perovskite * glycine nitrate process * magnetic behaviour
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 5.968, rok: 2011

his work tends to evidence that the significant chemical modifications observed in nanometric manganites are not concentrated at the surface of the particles and play a key role on their magnetic properties, especially for the lowest strontium-doping. La1 xSrxMnO3 solid solution with a 27 nmaverage crystallite size was prepared via the Glycine Nitrate Process. The evolutions versus x of the Curie temperature (TC) and saturation magnetization of the nanometric solid solution were interpreted taking into account the Goldschmidt tolerance factor, crystallite size, amount of vacancies and the mixed valency of manganese ions.
Trvalý link: http://hdl.handle.net/11104/0006920