Fe-57 Mossbauer spectroscopy investigation of the Fe-II/III mixed-valence state and the B-site order in double perovskite A(2)FeMoO(6)

J Linden*, H Yamauchi, M Karppinen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

Abstrakti

B-site ordered double-perovskite samples A FeMoO6, with A = Ca, Sr or Ba were synthesized in a reducing atmosphere using an encapsulation technique. The samples were characterized by Fe-57 Mossbauer spectroscopy. The valence of Fe was found to be in an intermediate II/III state, being close to the midpoint for A = Sr and slightly shifted towards 11 for Ba. The degree of B-site ordering was found to be more than 95%. Using various synthesis temperatures the ordering could be tuned. Fe atoms replacing Mo at the antisite and adjacent to it were identified in the Mossbauer data. Presence of antiphase boundaries was also seen. (C) 2003 Elsevier B.V. All rights reserved.

AlkuperäiskieliEnglanti
Sivut843-844
Sivumäärä2
JulkaisuJournal of Magnetism and Magnetic Materials
Vuosikerta272
DOI - pysyväislinkit
TilaJulkaistu - toukokuuta 2004
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu
TapahtumaInternational Conference on Magnetism - Rome, Italia
Kesto: 27 heinäkuuta 20031 elokuuta 2003

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