Structural, transport and magnetic properties of Sr2RuTiO 6

S. Savitha Pillai, P. N. Santhosh, P. John Thomas, F. Tuna, K. G. Suresh

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    The double perovskite, Sr2RuTiO6 has been studied by X-ray powder diffraction, magnetizations and magnetoresistance techniques. Rietveld analysis of the X-ray diffraction shows that the sample crystallizes in tetragonal structure with space group I4mcm and there is no indication of long range Ru/Ti cation ordering. The magnetic studies point towards the existence of magnetic polarons in the paramagnetic state with a weak ferromagnetic transition at 145 K. The temperature dependent magnetoresistance studies reveal an unusual cross over from positive to negative magnetoresistance at low temperature (∼15 K). The complex magnetotransport properties of Sr 2RuTiO6 arise from the competing ferromagnetic and antiferromagnetic superexchange interactions between Ru ions via Ti/O ions, initiated by the B-site cation disorder. © 2010 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)1450-1452
    Number of pages2
    JournalSolid State Communications
    Issue number31-32
    Publication statusPublished - Aug 2010


    • A. Double perovskite materials
    • B. Magnetoresistance
    • C. Transport properties
    • D. Structural properties


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