57Fe Mössbauer spectroscopy investigation of the Fe II/III mixed-valence state and the B-site order in double perovskite A2FeMoO6

Johan Lindén*, Hisao Yamauchi, Maarit Karppinen

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragKonferensartikelVetenskapligPeer review

4 Citeringar (Scopus)

Sammanfattning

B-site ordered double-perovskite samples A2FeMoO6, with A=Ca, Sr or Ba were synthesized in a reducing atmosphere using an encapsulation technique. The samples were characterized by 57Fe Mössbauer 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 II 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 Mössbauer data. Presence of antiphase boundaries was also seen.

OriginalspråkEngelska
Sidor (från-till)843-844
Antal sidor2
TidskriftJournal of Magnetism and Magnetic Materials
Volym272-276
DOI
StatusPublicerad - maj 2004
MoE-publikationstypA4 Artikel i en konferenspublikation
EvenemangProceedings of the International Conference on Magnetism - Rome, Italien
Varaktighet: 27 jul 20031 aug 2003

Fingeravtryck

Fördjupa i forskningsämnen för ”<sup>57</sup>Fe Mössbauer spectroscopy investigation of the Fe <sup>II/III</sup> mixed-valence state and the B-site order in double perovskite A<sub>2</sub>FeMoO<sub>6</sub>”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här