The effect of hydrostatic pressure on the dielectric response of Pb(Mg1/3Nb2/3)O-3 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 I kHz amounts to dT(m)/dp= -3.8K/100MPa, whereas that measured at I MHz equals -3.3K/100MPa. Analysis of the dielectric response of the highly polarizable Pb(Mg1/3Nb2/3)O-3 shows that hydrostatic pressure results in a decrease of the correlation radius r(c) of polar nanodomains, as well as their activation energy.
机构:
Alexandru Ioan Cuza Univ, Dept Solid State & Theoret Phys, Iasi 700506, RomaniaAlexandru Ioan Cuza Univ, Dept Solid State & Theoret Phys, Iasi 700506, Romania
Curecheriu, Lavinia Petronela
Mitoseriu, Liliana
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Alexandru Ioan Cuza Univ, Dept Solid State & Theoret Phys, Iasi 700506, RomaniaAlexandru Ioan Cuza Univ, Dept Solid State & Theoret Phys, Iasi 700506, Romania
机构:
Tsing Hua Univ, Inst Nucl Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing Fine Ceram Lab, Beijing 100084, Peoples R ChinaTsing Hua Univ, Inst Nucl Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing Fine Ceram Lab, Beijing 100084, Peoples R China
Zhang, Y
Li, LT
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机构:Tsing Hua Univ, Inst Nucl Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing Fine Ceram Lab, Beijing 100084, Peoples R China
Li, LT
Gui, ZL
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机构:Tsing Hua Univ, Inst Nucl Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing Fine Ceram Lab, Beijing 100084, Peoples R China
Gui, ZL
Tian, JM
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机构:Tsing Hua Univ, Inst Nucl Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing Fine Ceram Lab, Beijing 100084, Peoples R China
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Penn State Univ, Mat Res Inst, University Pk, PA 16802 USAUniv Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England
Zhang, S. J.
Donnelly, N. J.
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Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
Recapping Inc, Menlo Pk, CA USAUniv Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England