Critical temperatures of 70%Pb(Mg1/3Nb2/3)O 3-30%PbTiO3 thin films investigated by dielectric, ferroelectric, and structural measurements

X. J. Meng, D. Rémiens, M. Detalle, B. Dkhil, J. L. Sun, J. H. Chu

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Abstract

The authors have investigated the temperature dependence of the ferroelectric, dielectric, and structural properties of 70%Pb(Mg 1/3Nb2/3)O3-30%PbTiO3 thin films. Two critical temperatures were evidenced. The first one occurring around 410 K corresponds to the bulk paraelectric-ferroelectric phase transition and the second one around 200 K is rather related to a self-arrangement of small domains into macrodomains in order to minimize elastic energies. A multiscale domainlike structure is induced and the temperature evolution of such complex structure can be revealed through pronounced changes occurring in the nonlinear dielectric susceptibility.

Original languageEnglish
Article number132904
JournalApplied Physics Letters
Volume90
Issue number13
DOIs
StatePublished - 2007
Externally publishedYes

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