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Formation of Oxide Phases in the System Fe₂O₃-Sm₂O₃

Mira Ristić ; Ruđer Bošković Institute, P. 0. Box 1016, 41001 Zagreb, Croatia
Stanko Popović ; Ruđer Bošković Institute, P. 0. Box 1016, 41001 Zagreb, Croatia
Ilona Czakó-Nagy ; Department of Nuclear Chemistry, Eötvös-Loránd University, P. O. Box 32, 1518 Budapest, Hungary
Svetozar Musić ; Ruđer Bošković Institute, P. 0. Box 1016, 41001 Zagreb, Croatia

Sažetak

Formation of oxide phases in the system Fe203-Sm203 was investigated. The samples were prepared by the solid state reactions at two molar ratios of Fe203 and Sm203. The following oxide phases were detected by X-ray diffraction: C-Sm203, B-Sm203, a-Fe203, SmFe03 and Sm3Fe5012. For the molar ratio Fe203 : Sm203 = 1:1, SmFe03 was detected as one of the oxide phases at temperatures up to 800 °C and as a single phase at 1000 °C and higher temperatures. For the molar ratio Fe203 : SnigCtj = 5:3, SmFe03 was the intermediate phase up to 1200 °C, and Sm3Fe50i2 was found as a single phase at 1300 °C. The oxide phases containing iron ions were characterized by 57Fe Mössbauer spectroscopy. The formation of SmFe03 and Sm3Fe5012 phases, as end products of the solid state reactions in the system Fe203-Sm203, was also investigated by IR spectroscopy.

Ključne riječi

Hrčak ID:

136875

URI

https://hrcak.srce.hr/136875

Datum izdavanja:

1.11.1994.

Posjeta: 1.075 *