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Structural investigation of a novel perovskite-based lead-free ceramics: xBiScO(3)-(1-x)BaTiO3
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Datta, K. and Thomas, Pam A. (2010) Structural investigation of a novel perovskite-based lead-free ceramics: xBiScO(3)-(1-x)BaTiO3. Journal of Applied Physics, Vol.107 (No.4). Article: 043516. doi:10.1063/1.3309064 ISSN 0021-8979.
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Official URL: http://dx.doi.org/10.1063/1.3309064
Abstract
A full structural investigation was carried out on novel lead-free piezoelectric solid solutions of xBiScO(3)-(1-x)BaTiO3 (BS-BT) between x = 0.0 and 0.35 utilizing x-ray and neutron powder diffraction. This particular system demonstrated an extended tetragonal-pseudocubic phase boundary at room temperature in the region 0.05 <= x <= 0.20. Rietveld refinements were performed on the neutron powder diffraction data to obtain detailed crystallographic information across the phase diagram of this binary system. The best model to describe the phase boundary was found to be a mixture of tetragonal (P4mm) and strongly pseudocubic rhombohedral (R3m) phases. Non-ambient x-ray diffraction patterns were collected in the temperature range of -253 to 325 degrees C to elucidate the effect of incorporation of BiScO3 on the temperature-dependent structural phase transitions of BaTiO3. Interestingly, the BS-BT system for x >= 0.05 demonstrated only one structural phase transition, which is the ferroelectric to paraelectric phase transition, suppressing the other two low temperature phase transitions. High-temperature dielectric properties were also studied in order to examine the physical properties of the ceramics. (c) 2010 American Institute of Physics. [doi:10.1063/1.3309064]
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Applied Physics | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0021-8979 | ||||
Official Date: | 15 February 2010 | ||||
Dates: |
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Volume: | Vol.107 | ||||
Number: | No.4 | ||||
Number of Pages: | 5 | ||||
Page Range: | Article: 043516 | ||||
DOI: | 10.1063/1.3309064 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | University of Warwick, Advantage West Midlands (AWM), European Regional Development Fund (ERDF) |
Data sourced from Thomson Reuters' Web of Knowledge
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