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Effect of tetragonal distortion on ferroelectric domain switching: A case study on La-doped BiFeO[sub 3]–PbTiO[sub 3] ceramics

Leist, Thorsten and Granzow, Torsten and Jo, Wook and Rödel, Jürgen (2010):
Effect of tetragonal distortion on ferroelectric domain switching: A case study on La-doped BiFeO[sub 3]–PbTiO[sub 3] ceramics.
In: Journal of Applied Physics, pp. 014103-1-014103-6, 108, (1), ISSN 00218979,
[Online-Edition: http://dx.doi.org/10.1063/1.3445771],
[Article]

Abstract

The ferroelectric and piezoelectric properties of (1−x)BiFeO3–xPbTiO3 (BF-PT) ceramics were investigated as a function of tetragonal distortion. The latter was adjusted by employing La-doping (0–30 at %) while keeping the material near the morphotropic phase boundary by varying x between 0.35 and 0.46. This allows changing the c/a ratio of tetragonal BF-PT in the range from 1.10–1.01 and consequently alters the level of compatibility stresses. It was found that the c/a ratio has a significant influence on domain switching as inferred from electric field induced polarization, strain hysteresis, and Rayleigh measurements. Specifically, a threshold c/a ratio of about 1.045 was identified below which the electric field induced domain mobility increases sharply.

Item Type: Article
Erschienen: 2010
Creators: Leist, Thorsten and Granzow, Torsten and Jo, Wook and Rödel, Jürgen
Title: Effect of tetragonal distortion on ferroelectric domain switching: A case study on La-doped BiFeO[sub 3]–PbTiO[sub 3] ceramics
Language: English
Abstract:

The ferroelectric and piezoelectric properties of (1−x)BiFeO3–xPbTiO3 (BF-PT) ceramics were investigated as a function of tetragonal distortion. The latter was adjusted by employing La-doping (0–30 at %) while keeping the material near the morphotropic phase boundary by varying x between 0.35 and 0.46. This allows changing the c/a ratio of tetragonal BF-PT in the range from 1.10–1.01 and consequently alters the level of compatibility stresses. It was found that the c/a ratio has a significant influence on domain switching as inferred from electric field induced polarization, strain hysteresis, and Rayleigh measurements. Specifically, a threshold c/a ratio of about 1.045 was identified below which the electric field induced domain mobility increases sharply.

Journal or Publication Title: Journal of Applied Physics
Volume: 108
Number: 1
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: 17 Jun 2011 14:03
Official URL: http://dx.doi.org/10.1063/1.3445771
Identification Number: doi:10.1063/1.3445771
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