Abstract
The effect of external electric fields on the orientation of (MnTi″−VO••)× defect dipoles in ferroelectric BaTiO3 single crystals and its interplay with the domain structure were investigated by means of electron paramagnetic resonance (EPR) spectroscopy and optical microscopy. The results show that in specimens aged in the ferroelectric state for a defined time, so-termed ferroelectrically aged, the (MnTi″−VO••)× defect dipoles orient along the direction of spontaneous polarization and follow the domain switching upon poling with correspondingly high electric fields. A comparison of the EPR signal in poled aged single-domain samples to that in naturally aged multidomain samples indicates a similar reorientation process of the defect dipole, which means that dipole reorientation rather requires long time, thermal energy, and high electric fields, i.e., more energy.
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Dates
Type | When |
---|---|
Created | 16 years, 9 months ago (Nov. 18, 2008, 6:36 p.m.) |
Deposited | 2 years, 1 month ago (July 2, 2023, 4:35 p.m.) |
Indexed | 2 weeks, 6 days ago (Aug. 12, 2025, 5:31 p.m.) |
Issued | 16 years, 9 months ago (Nov. 17, 2008) |
Published | 16 years, 9 months ago (Nov. 17, 2008) |
Published Online | 16 years, 9 months ago (Nov. 18, 2008) |
Published Print | 16 years, 9 months ago (Nov. 17, 2008) |
@article{Zhang_2008, title={Reorientation of (MnTi″−VO••)× defect dipoles in acceptor-modified BaTiO3 single crystals: An electron paramagnetic resonance study}, volume={93}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.3006327}, DOI={10.1063/1.3006327}, number={20}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Zhang, Lixue and Erdem, Emre and Ren, Xiaobing and Eichel, Rüdiger-A.}, year={2008}, month=nov }