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American Institute of Physics, Applied Physics Letters, 1(87), p. 012904

DOI: 10.1063/1.1990253

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Dielectric Anomalies of the Relaxor-Based 0.9Pb(Mg1∕3Nb2∕3)O3-0.1PbTiO3 Single Crystals

Journal article published in 2005 by Haixia Wang, Haiqing Xu, Haosu Luo, Zhiwen Yin, Bokov Aa, A. A. Bokov ORCID, Z.-G. Ye
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The temperature, frequency, and orientation dependence of complex electrical permittivity in 0.9 Pb ( Mg 1/3 Nb 2/3) O 3-0.1 Pb Ti O 3 (0.9PMN-0.1PT) unpoled single crystals have been investigated in detail. The spontaneous ferroelectric-to-relaxor (FE-R) phase transition was observed in 0.9PMN-0.1PT crystals at about 280 K . Interestingly, the Vogel-Fulcher-type anomaly of the dielectric constant has been obtained, with the fitted temperature Tf being very close to this FE-R phase transition temperature. A small frequency dependence of electric permittivity magnitude appears at and below 280 K . The changes of the polar nanoregion subsystem and the peculiarities of the domain structure play an important role in the dielectric anomalies and the appearance of the FE-R crossover region.