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  Paul, A.K.; Jansen, M.; Yan, B.; Felser, C.; Reehuis, M.; Abdala, P.M.: Synthesis, Crystal Structure, and Physical Properties of Sr₂FeOsO₆. Inorganic Chemistry 52 (2013), p. 6713-6719

10.1021/ic400740f
Open Access Version (externer Anbieter)

Abstract:
In the exploration of new osmium based double perovskites, Sr2FeOsO6 is a new insertion in the existing family. The polycrystalline compound has been prepared by solid state synthesis from the respective binary oxides. Powder X-ray diffraction (PXRD) analysis shows the structure is pseudocubic at room temperature, whereas low-temperature synchrotron data refinements reveal the structure to be tetragonal, space group I4/m. Heat capacity and magnetic measurements of Sr2FeOsO6 indicated the presence of two magnetic phase transitions at T1 = 140 K and T2 = 67 K. Band structure calculations showed the compound as a narrow energy gap semiconductor, which supports the experimental results obtained from the resistivity measurements. The present study documents significant structural and electronic effects of substituting Fe3+ for Cr3+ ion in Sr2CrOsO6.