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Mössbauer effect study of monoclinic Fe2TiO5
Authors:D. Hanžel  M. Drofenik  V. Kraševec  A. Prodan  F. Sevšek
Affiliation:J. Stefan Institute, E. Kardelj University of Ljubljana, Ljubljana, Yugoslavia
Abstract:The spectra of 57Fe in monoclinic Fe2TiO5 were interpreted as hyperfine patterns belonging to two nonidentical iron sites. They confirm that Fe3+ ions are distributed over 4a and 8f sites. The spectra of mosaic-like crystals indicate that all iron spins lie in the (100) plane. The temperature dependences of hf parameters gave a magnetic ordering temperature 350 K, average saturation effective field 505 kG and Debye temperature 430 K. Above 1500 K, monoclinic Fe2TiO5 transformed into the stable pseudobrookite form.
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