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The chemical and physical properties of the double perovskite Pb2FeMoO6 are systematically studied by means of structural and magnetic characterization. The compound crystallizes in the cubic Fmm space group, with partial cation order involving iron and molybdenum at the perovskite B site. Structural and Mössbauer characterization points to the presence of nanometer-sized antiphase domains within the ordered matrix giving rise to two iron populations, characterized by different chemical environments, with the same weight but different valence (0.3 electrons) and inequivalent magnetic anisotropy. This structural feature deeply affects the properties of the compound: Mössbauer and EPR measurements show a high-temperature superparamagnetic-like behavior ascribed to weak magnetic interactions occurring between the antiphase domains and the rest of the sample. However, below 270 K ferrimagnetic …
Royal Society of Chemistry
Publication date: 
1 Jan 2016

F Mezzadri, D Delmonte, F Orlandi, C Pernechele, G Calestani, M Solzi, M Lantieri, G Spina, R Cabassi, F Bolzoni, M Fittipaldi, M Merlini, A Migliori, P Manuel, E Gilioli

Biblio References: 
Volume: 4 Issue: 7 Pages: 1533-1542
Journal of Materials Chemistry C