Effect of Hydrostatic Pressure on the Dielectric Response of Pb(Mg1/3Nb2/3)O3 Relaxor |
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| Authors: | W Nawrocik P Czarnecki A Hilczer R Blinc |
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| Institution: | 1. Institute of Physics , Adam Mickiewicz University , Umultowska 85, Poznań, 61-614, Poland;2. Jo?ef Stefan Institute , P.O. Box 3000, Slovenia , Ljubljana |
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| Abstract: | The effect of hydrostatic pressure on the dielectric response of Pb(Mg1/3Nb2/3)O3 relaxor single crystal was studied. An increase in the dispersion of the dielectric anomaly, characteristic of the relaxors, was observed: pressure-induced downward shift of the temperature T m of permittivity maximum at 1 kHz amounts to dT m /dp = ? 3.8 K/100 MPa, whereas that measured at 1 MHz equals ? 3.3 K/100 MPa. Analysis of the dielectric response of the highly polarizable Pb(Mg1/3Nb2/3)O3 shows that hydrostatic pressure results in a decrease of the correlation radius r c of polar nanodomains, as well as their activation energy. |
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| Keywords: | Relaxors Pb(Mg1/3Nb2/3)O3 Dielectric Response Hydrostatic Pressure Effect |
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