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Properties of non-crystalline EuIG and DyIG obtained from Mossbauer and magnetization data

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Non crystalline (nc) EuIG and DyIG have been prepared by dc¿sputtering. Mössbauer data on 57Fe, 151Eu and 161Dy reveal sharp magnetic transitions at 62 K and 70 K for nc EuIG and DyIG, respectively. The 57Fe hyperfine (hf) spectra consist of three superpositioned patterns for Fe3+ in tetrahedral and octahedral and for Fe2+ in tetrahedral oxygen coordination. The saturation hf fields at 4.2 K are reduced compared to the values of the corresponding         crystalline materials. The induced hf field at 151Eu is only 1/8 of that for crystalline EuIG

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Reproducció digital del document proporcionada per AIP i http://dx.doi.org/10.1063/1.326869

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Articles publicats en revistes (Física de la Matèria Condensada)

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Properties of non-crystalline EuIG and DyIG obtained from Mossbauer and magnetization data