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Temperature characteristics and development of field-induced phase transition in relaxor ferroelectric Pb(Mg1/3Nb2/3)0.87Ti0.13O3 ceramics

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4 Author(s)
Perantie, J. ; Microelectronics and Materials Physics Laboratories and EMPART Research Group of Infotech Oulu, University of Oulu, P.O. Box 4500, FIN-90014 Oulu, Finland ; Hagberg, J. ; Uusimaki, A. ; Jantunen, H.

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Ferroelectric phase inducing threshold electric field Eth and its temperature dependence were determined in relaxor ferroelectric 0.87Pb(Mg1/3Nb2/3)O3-0.13PbTiO3 (PMN–13PT) ceramics by measuring dielectric response on a dc field pulse. Evolution of the induced ferroelectricity was observed by means of polarization measurements. An inducing threshold field was found to have a minimum of Eth,min=1.55 kV/cm at T=-5 °C. In contrast to pure PMN, which shows a minimum threshold field near the depolarization temperature, the temperature of the minimum threshold field differs by an amount of ΔT=23 °C from the depolarization temperature Tdp=18 °C in PMN-13PT.

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Applied Physics Letters  (Volume:93 ,  Issue: 13 )