Cluster glass properties and magnetic phase separation studies of Nd xBi0.5-xSr0.5MnO3 (x = 0.1, 0.2, 0.3 and 0.4)

John Thomas Prabhakar, S. Savitha Pillai, P. N. Santhosh, N. Harish Kumar, P. John Thomas, F. Tuna

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    Abstract

    The crystal structure, dc and ac magnetic susceptibility, electron spin resonance and magnetoresistive behavior of NdxBi 0.5-xSr0.5MnO3 (x = 0.1, 0.2, 0.3 and 0.4) compounds are studied. The Rietveld analysis of the XRD data shows that the samples crystallize in an orthorhombic perovskite structure, with Pbnm space group for x = 0.1 and 0.2 and Imma space group for x = 0.4 and 0.3. Magnetic studies reveal that substituting Bi with Nd collapses the robust charge ordered AFM state of Bi0.5Sr0.5MnO3 to an inhomogeneous magnetic state. As Nd concentration increases there is a gradual appearance of cluster glass behavior. ESR studies reveal that the NBSMO system phase separates into ferromagnetic and antiferromagnetic regions below the transition temperature. © 2009 IOP Publishing Ltd.
    Original languageEnglish
    Article number195409
    JournalJournal of Physics: Condensed Matter
    Volume21
    Issue number19
    DOIs
    Publication statusPublished - 2009

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