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Effect of size disorder on the structure and magnetic properties of La0.3R0.2Sr0.5Ti0.5Fe0.5O3 (R = La, Nd, Gd, and Dy) compounds

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Abstract

Successful preparation of perovskite oxides of chemical formula La0.3R0.2Sr0.5Ti0.5Fe0.5O3 (R = La, Nd, Gd, and Dy) has been achieved by citrate-gel precursor method, and their structures were determined using powder X-ray diffraction (XRD). The Rietveld analysis of the XRD data showed that all the samples have anti-site disorder. Anti-site disorder has not been seen to alter the symmetry of crystal structure but leads to tilt of the Fe3+ neighbouring octahedral which by its role gives rise to canted anti-ferromagnetism as a result of anti-parallel misalignment of the magnetic moments of the Fe3+ ions.

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Acknowledgments

Authors are thankful to University Grants Commission, New Delhi, for financial support under the UGC Major Research Project (F. No. 41-284/2012SR; dated 13.07.2012). Authors are also thankful to Dr. Harpreet Singh, Central Research Facility Section, Indian Institute of Technology Ropar, for recording XRD. Thanks are also due to Prof. Ramesh Chandra, Institute Instrumentation Centre, Indian Institute of Technology, Roorkee, for recording SEM and elemental mapping and Director, Sophisticated Analytical Instrumentation Facility (SAIF), Panjab University Chandigarh, for recording TEM.

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  1. Department of Chemistry, University of Jammu, Jammu, 180006, India

    Devinder Singh & Arun Mahajan

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  1. Devinder Singh
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  2. Arun Mahajan
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Correspondence to Devinder Singh.

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Singh, D., Mahajan, A. Effect of size disorder on the structure and magnetic properties of La0.3R0.2Sr0.5Ti0.5Fe0.5O3 (R = La, Nd, Gd, and Dy) compounds. J Sol-Gel Sci Technol 76, 171–179 (2015). https://doi.org/10.1007/s10971-015-3764-7

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  • DOI: https://doi.org/10.1007/s10971-015-3764-7

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