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Shift in Morphotropic Phase Boundary in La-Doped BiFeO3–PbTiO3Piezoceramics

Leist, Thorsten and Jo, Wook and Comyn, Timothy and Bell, Andrew and Rödel, Jürgen (2009):
Shift in Morphotropic Phase Boundary in La-Doped BiFeO3–PbTiO3Piezoceramics.
In: Japanese Journal of Applied Physics, pp. 120205-1-120205-1-3, 48, (12), ISSN 0021-4922,
[Online-Edition: http://dx.doi.org/10.1143/JJAP.48.120205],
[Article]

Abstract

Polycrystalline BiFeO3-PbTiO3 (BF-PT) powders with mixed tetragonal and rhombohedral crystal structure (morphotropic phase boundary: MPB) were modified with lanthanum to provide a wide variation in tetragonal distortion. X-ray diffraction from both the powder and the corresponding bulk ceramic demonstrated that the MPB in the bulk is shifted from 1-5mol% towards the tetragonal PT as compared to the powder. This shift was correlated with the degree of tetragonal distortion as quantified by c/a ratio.

Item Type: Article
Erschienen: 2009
Creators: Leist, Thorsten and Jo, Wook and Comyn, Timothy and Bell, Andrew and Rödel, Jürgen
Title: Shift in Morphotropic Phase Boundary in La-Doped BiFeO3–PbTiO3Piezoceramics
Language: English
Abstract:

Polycrystalline BiFeO3-PbTiO3 (BF-PT) powders with mixed tetragonal and rhombohedral crystal structure (morphotropic phase boundary: MPB) were modified with lanthanum to provide a wide variation in tetragonal distortion. X-ray diffraction from both the powder and the corresponding bulk ceramic demonstrated that the MPB in the bulk is shifted from 1-5mol% towards the tetragonal PT as compared to the powder. This shift was correlated with the degree of tetragonal distortion as quantified by c/a ratio.

Journal or Publication Title: Japanese Journal of Applied Physics
Volume: 48
Number: 12
Uncontrolled Keywords: bismuth compounds; crystal structure; lead compounds; piezoceramics; powders; sintering; X-ray diffraction
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 18 May 2011 15:20
Official URL: http://dx.doi.org/10.1143/JJAP.48.120205
Identification Number: doi:10.1143/JJAP.48.120205
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