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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. Chauhan, M. Kar, J. Kumar, S. K. Jaiswal 
Corresponding Authors:
S. Chauhan, S. K. Jaiswal 
DOI #:
https://doi.org/10.1016/j.matchemphys.2019.122378 
Title:
Cerium induced Raman spectra of (Ba0.5Sr0.5)(Fe1-xCex)O3-δ (x=0 - 1) 
Journal:
Materials Chemistry and Physics  
Year:
2020 
Volume:
241 
Page:
122378 
Keywords:
Ceramics Oxides, X-ray diffraction, Perovskites-type cubic, Raman spectroscope 
Abstract:
The effect of cerium insertion in sol-gel derived (Ba0.5Sr0.5)(Fe1-xCex)O3-δ (x ¼0 – 1) powders has been inves-tigated by Raman spectroscopy and findings correlated with crystalline phases present. A perovskite-type (ABO3) cubic phase of composition (x ¼0) displays no Raman band but cerium substitution of iron is shown to induce distortion via BO6 octahedra tilt and to displace B-ion from its centro-symmetrical location besides expansion (due to its large ionic radius) with formation of an orthorhombic structure of lower symmetry (space group Pmnb or D4h16), characterized by several Raman bands including ~ 342 and 350 cm-1 
Entered by:
Venkata Dantham on 2020-08-02 
 
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