Pokharel, Bhadra P. ; Ranjan, Rajeev ; Pandey, Dhananjai ; Siruguri, V. ; Paranjpe, S. K. (1999) Rhombohedral superlattice structure and relaxor ferroelectric behavior of (Pb0.70Ba0.30)ZrO3 ceramics Applied Physics Letters, 74 (5). pp. 756-758. ISSN 0003-6951
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Official URL: http://apl.aip.org/resource/1/applab/v74/i5/p756_s...
Related URL: http://dx.doi.org/10.1063/1.123113
Abstract
Superlattice reflections observed in the neutron powder-diffraction patterns of (Pb0.80Ba0.20)ZrO3 (PBZ20) and (Pb0.70Ba0.30)ZrO3 (PBZ30) are explained in terms of doubled rhombohedral cell (R3c). A Rietveld analysis of the neutron data reveals that the displacements of Pb2+/Ba2+ and Zr4+ decrease with increasing Ba2+ content while the thermal parameter for Pb2+/Ba2+ increases and becomes similar to ferroelectric relaxors. Dielectric studies indeed confirm relaxor behavior in PBZ30 with Vogel-Fulcher type relaxational freezing.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Lead Compounds; Barium Compounds; Ferroelectric Ceramics; Permittivity; Dielectric Relaxation; Crystal Structure; Neutron Diffraction; Superlattices; Ferroelectric Transitions |
| ID Code: | 88744 |
| Deposited On: | 29 Mar 2012 14:39 |
| Last Modified: | 29 Mar 2012 14:39 |
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