Using atomic force microscopy and piezoresponse force microscopy (PFM), as well as complementary dielectric measurements, the ferroelectric domain structure of single crystals of pure and ruthenium (Ru)-doped , and was analyzed. The coexistence of tetragonal and nontetragonal ferroelectric domains in PZN-PT near the morphotropic phase boundary (MPB) was directly observed via PFM imaging. The incorporation of Ru in the perovskite structure substantially decreases the ferroelectric domain size, thus reducing the polar fraction distributed in the pseudocubic matrix. The polarization and strain hysteresis loops show that Ru doping leads to significant ferroelectric hardening, which is attractive for high-power applications. The local structure and valent state of the incorporated Ru cations were additionally analyzed by electron paramagnetic resonance spectroscopy. Our results demonstrate that doping of tetragonal PZN-PT near MPB is a promising route to design advanced multifunctional single-crystal materials.
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1 October 2009
Research Article|
October 09 2009
Ferroelectric properties of ruthenium-doped lead zinc niobate-lead titanate single crystal
T. Scholz;
T. Scholz
1Institute of Advanced Ceramics,
Hamburg University of Technology
, Denickestrasse 15, D-21703 Hamburg, Germany
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B. Mihailova;
B. Mihailova
a)
2Institute of Mineralogy and Petrology,
University of Hamburg
, Grindelallee 48, D-20146 Hamburg, Germany
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G. A. Schneider;
G. A. Schneider
1Institute of Advanced Ceramics,
Hamburg University of Technology
, Denickestrasse 15, D-21703 Hamburg, Germany
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N. Pagels;
N. Pagels
3Institute of Inorganic and Applied Chemistry,
University of Hamburg
, Martin-Luther-King-Platz 6, D-20146 Hamburg, Germany
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J. Heck;
J. Heck
3Institute of Inorganic and Applied Chemistry,
University of Hamburg
, Martin-Luther-King-Platz 6, D-20146 Hamburg, Germany
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T. Malcherek;
T. Malcherek
2Institute of Mineralogy and Petrology,
University of Hamburg
, Grindelallee 48, D-20146 Hamburg, Germany
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R. P. Fernandes;
R. P. Fernandes
1Institute of Advanced Ceramics,
Hamburg University of Technology
, Denickestrasse 15, D-21703 Hamburg, Germany
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V. Marinova;
V. Marinova
4Central Laboratory of Optical Storage and Processing of Information,
Bulgarian Academy of Sciences
, P.O. Box 95, 1113 Sofia, Bulgaria
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M. Gospodinov;
M. Gospodinov
5Institute of Solid State Physics,
Bulgarian Academy of Sciences
, Blvd. Tzarigradsko Chausse 72, 1784 Sofia, Bulgaria
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U. Bismayer
U. Bismayer
2Institute of Mineralogy and Petrology,
University of Hamburg
, Grindelallee 48, D-20146 Hamburg, Germany
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
J. Appl. Phys. 106, 074108 (2009)
Article history
Received:
May 19 2009
Accepted:
September 06 2009
Citation
T. Scholz, B. Mihailova, G. A. Schneider, N. Pagels, J. Heck, T. Malcherek, R. P. Fernandes, V. Marinova, M. Gospodinov, U. Bismayer; Ferroelectric properties of ruthenium-doped lead zinc niobate-lead titanate single crystal. J. Appl. Phys. 1 October 2009; 106 (7): 074108. https://doi.org/10.1063/1.3238487
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