Effect of aging and Mn substitution on anisotropy of third generation piezoelectrics

We study the aging and Mn doping effect on third generation lead based relaxor single crystals. We measured the polarization (PE) and strain with applied field on two perpendicular orientations of the rhombohedral pseudocubic [001] poled crystal. To understand these effects along the average dipoles...

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Bibliographic Details
Published in:Ferroelectrics 2018-10, Vol.535 (1), p.120-127
Main Authors: Vadapoo, Rajasekarakumar, Ahart, Muhtar, Staruch, Margo, Guerette, Michael, Luo, Jun, Finkel, Peter, Cohen, R. E.
Format: Article
Language:English
Subjects:
Aging
Anisotropy
Crystal defects
Crystal structure
Crystals
Defects
Dipoles
Manganese
Polarization
Relaxors
Single crystals
Trigonometric functions
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Summary:We study the aging and Mn doping effect on third generation lead based relaxor single crystals. We measured the polarization (PE) and strain with applied field on two perpendicular orientations of the rhombohedral pseudocubic [001] poled crystal. To understand these effects along the average dipoles/defect dipoles direction, we adopt a simple model with direction cosine and sine of polarization and strain. We found that when the PE measurement is perpendicular to average defect dipoles, a double loop is observed, and when it is parallel an asymmetric response is observed. We propose that the varied response found in PE measurements depend on the relative direction of average dipoles/defect dipoles to the measurement direction.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2018.1474655