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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/1499

Title: Structural, electronic, and magnetic properties of Sr2-xBaxFeMoO6(0 <= x <= 2)
Authors: HABIB, AH
SALEEM, A
TOMY, CV
BAHADUR, D
Keywords: room-temperature magnetoresistance
double-perovskite
sr2femoo6
Issue Date: 2005
Publisher: AMER INST PHYSICS
Citation: JOURNAL OF APPLIED PHYSICS,97(10)
Abstract: Here we report on the investigation of structural, transport, and magnetic properties,in double perovskite system, Sr2-xBaxFeMoO6(0 <= x <= 2). X-ray Diffraction analysis shows that the compounds form in single phase across the whole solid solution range. The Rietveld refinement of the x-ray data clearly indicates a structural transition from tetragonal (I4/m) for x <= 0.6 to cubic (Fm3m) for x >= 1.6 with an orthorhombic (Fmmm) structure in the intermediate region (0.8 <= x <= 1.4). Magnetization studies show a regular increase in saturation magnetization from 2.0 mu B/f.u.(x=0) to 30 mu(B)/f.u.(x=2) with increasing Ba concentration. However, magnetization as well as electron-spin resonance (ESR) measurements confirmed a systematic decrease in the Curie temperatures from 420 K (x=0) to 310K (x=2) with increasing x. Resistivity measurements carried out in zero magnetic field and for a field of 0.8 T reveal appreciably higher magnetoresistance for intermediate compositions in comparison to those at the ends. (c) 2005 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.1847934
http://dspace.library.iitb.ac.in/xmlui/handle/10054/14649
http://hdl.handle.net/100/1499
ISSN: 0021-8979
Appears in Collections:Proceedings papers

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