Dielectric and elastic properties of 0.70Pb(Mg1/3Nb2/3)O3–0.30PbTiO3 single crystal and their electric-field dependence |
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Authors: | Zhu Wang Rui Zhang Enwei Sun Wenwu Cao |
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Affiliation: | (1) Center for the Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, China;(2) Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA; |
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Abstract: | The dielectric and elastic properties of 001]c-oriented 0.7Pb(Mg1/3Nb2/3)O3–0.3PbTiO3 (PMN–0.3PT) crystal were investigated as a function of poling field at 300 and 360 K, respectively. At 300 K, the dielectric
constant and elastic compliance of rhombohedral PMN–0.3PT crystal change drastically at a critical field corresponding to
an electric-induced ferroelectric phase transition. At 360 K, the PMN–0.3PT crystal is tetragonal, its dielectric constant
and elastic compliance change drastically at two critical fields, which indicates an intermediate phase. Furthermore, much
small dielectric loss factors and mechanical loss factors are observed in mono-domain state, which indicates that losses mainly
come from domain wall contributions. |
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