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Structural and ferroelectric properties of lanthanum modified BPZT ceramics |
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| Authors: | Parveen Kumar Sangeeta Singh J.K. Juneja Chandra Prakash K.K. Raina |
| Affiliation: | 1. Electroceramics Research Lab, GVM Girls College, Sonepat 131001, India;2. Department of Physics, GVM Girls College, Sonepat 131001, India;3. Department of Physics, Hindu College, Sonepat 131001, India;4. Directorate of ER&IPR, DRDO, DRDO Bhawan, New Delhi 110105, India;5. School of Physics & Material Science, Thapar University, Patiala 147004, India |
| Abstract: | Lanthanum modified Ba0.80Pb0.20Ti0.90Zr0.10O3 (BPZT) ceramics with composition Ba0.80−xLax Pb0.20Ti0.90Zr0.10O3; x = 0–0.01 in steps of 0.0025 were prepared by conventional solid state method. All the samples were sintered at 1325 °C after compacting in circular discs. Detailed structural and ferroelectric properties were carried out for sintered specimens. X-ray diffraction analysis for all the sintered specimens shows tetragonal structure with perovskite. Coercive field (Ec) and remanent polarization (Pr) to spontaneous polarization (Ps) ratio (Pr/Ps) was found to decrease with increase in temperature. Pr/Ps ratio was found to decrease with increase in x, except x = 0.0025. |
| Keywords: | Ferroelectrics Barium titanate Lanthanum PZT |
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