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A comprehensive study of the phase diagram of KxNa1-xNbO3
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Baker, Daniel William, Thomas, Pam A., Zhang, N. and Glazer, A. M. (Anthony Michael) (2009) A comprehensive study of the phase diagram of KxNa1-xNbO3. Applied Physics Letters, Vol.95 (No.9). Article no. 091903. doi:10.1063/1.3212861 ISSN 0003-6951.
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Official URL: http://dx.doi.org/10.1063/1.3212861
Abstract
The phase diagram of lead-free piezoelectric KxNa1-xNbO3 has been studied, with particular focus on the proposed morphotropic phase boundaries, by powder and single crystal x-ray diffraction. The tilt system and cation displacement has been mapped out as a function of temperature and composition, highlighting changes in the oxygen octahedra at x=0.2 and x=0.4 at room temperature. The orthorhombic to monoclinic boundary at x=0.5 has been investigated, with a subtle change in the structure observed. The conclusion is that KxNa1-xNbO3 does not display a morphotropic phase boundary comparable with that in lead zirconate titanate, and that the most significant structural change as a function of composition occurs at x=0.2 because of the change of the tilt system. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3212861]
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: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0003-6951 | ||||
Official Date: | 31 August 2009 | ||||
Dates: |
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Volume: | Vol.95 | ||||
Number: | No.9 | ||||
Number of Pages: | 3 | ||||
Page Range: | Article no. 091903 | ||||
DOI: | 10.1063/1.3212861 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Advantage West Midlands (AWM), European Regional Development Fund (ERDF) |
Data sourced from Thomson Reuters' Web of Knowledge
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