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. PXRD analysis shows the structure is pseudo-cubic 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.
@article{arxiv.1307.2586,
title = {Synthesis, Crystal Structure and Physical Properties of Sr2FeOsO6},
author = {Avijit Kumar Paul and Martin Jansen and Binghai Yan and Claudia Felser and Manfred Reehuis and Paula M. Abdala},
journal= {arXiv preprint arXiv:1307.2586},
year = {2013}
}