title: Cluster glass properties and magnetic phase separation studies of Nd(x)Bi(0.5-x)Sr(0.5)MnO(3) (x = 0.1, 0.2, 0.3 and 0.4).
abstract: The crystal structure, dc and ac magnetic susceptibility, electron spin resonance and magnetoresistive behavior of Nd(x)Bi(0.5-x)Sr(0.5)MnO(3) (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 Bi(0.5)Sr(0.5)MnO(3) 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.
authors.affiliation: Department of Physics, Indian Institute of Technology, Madras, Tamil Nadu 600036, India.
authors.forename: S
authors.initials: S
authors.lastname: Savitha Pillai
authors.forename: P N
authors.initials: PN
authors.lastname: Santhosh
authors.forename: N
authors.initials: N
authors.lastname: Harish Kumar
authors.forename: P
authors.initials: P
authors.lastname: John Thomas
authors.forename: F
authors.initials: F
authors.lastname: Tuna