Kalyani, Ajay Kumar and Garg, Rohini and Ranjan, Rajeev (2009) Tendency to promote ferroelectric distortion in Pr-modified PbTiO3. In: Applied physics letters, 95 (22).
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Abstract
Structural, microstructural, and dielectric studies have been carried out on Pr-modified PbTiO3. A comparative analysis with La-modified PbTiO3 suggests that for chemical modification by same amount, the Pr-modified system has larger tetragonal strain and Curie point. No clear feature of relaxor ferroelectric state is observed for Pr concentration as high as x=0.35, suggesting that Pr modification is less effective, as compared to La-modification, in inducing a relaxor ferroelectric state. Results suggest that inspite of increased chemical disorder, Pr modification partly tends to restore the ferroelectric distortion of the lattice through partial occupancy of the Pr4+ ions on the Ti4+ sites.
Item Type: | Journal Article |
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Publication: | Applied physics letters |
Publisher: | American Institute of Physics |
Additional Information: | Copyright for this article belongs to American Institute of Physics. |
Keywords: | dielectric relaxation; ferroelectric Curie temperature; lead compounds; praseodymium; relaxor ferroelectrics |
Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
Date Deposited: | 05 Jan 2010 11:13 |
Last Modified: | 19 Sep 2010 05:54 |
URI: | http://eprints.iisc.ac.in/id/eprint/25348 |
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