Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7992422 | Journal of Alloys and Compounds | 2018 | 27 Pages |
Abstract
Bi1-xPrxFe1-xTixO3 ceramics with xâ¯â¤â¯0.20 were synthesized by solid state reaction method. XRD patterns confirm single phase formation for all the samples. Rietveld refinement of diffraction data reveals the structural transition from rhombohedral (R3c) phase for xâ¯â¤â¯0.10 to orthorhombic (Pnma) phase for xâ¯â¥â¯0.15. Temperature dependence dielectric plots exhibit two dielectric anomalies one at low temperature (â¼250â¯Â°C) and other at high temperature (â¼370â¯Â°C) corresponding to the magnetic transition temperature TN. Dielectric properties of samples were improved by controlling the amount of co doping to help ferroelectric measurements. Room temperature Mâ¯ââ¯H measurements have shown an increase in magnetization with x which may be due to the partial destruction of spin cycloid of FeOFe network caused by Ti doping. FT-IR spectra exhibit a broad absorption band at 567â¯cmâ1, whose broadness decreases with x. Absorption of light in the spectral range from 520â¯nm to 546â¯nm indicates an optical band gap in the visible range for these materials.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Vikash Singh, Subhash Sharma, R.K. Dwivedi,