Phase Front Near the Critical End Point as the Boundary of the Polar Nanoregions in Relaxor Ferroelectrics

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概要

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• The static modulation structure of the phase front at the field-induced first-order transition point near the critical end point (CEP) was discussed on the basis of the Landau-type free-energy function. It was confirmed that the field E dependence of the thickness of the phase front is proportional to (E_{\text{CEP}}-E)^{-1/2}, diverging at CEP (E=E_{\text{CEP}}). It is pointed out that, in relaxor ferroelectrics, the boundary between the polar nanoregion (PNR) and the paraelectric matrix may be considered as a phase front, and that the contribution to the dielectric response of the phase front cannot be ignored.

• 2011-04-15

著者

• Iwata Makoto

  Department Of Applied Physics School Of Engineering Nagoya University

• KUTNJAK Zdravko

  Jozef Stefan Institute

• BLINC Robert

  Jozef Stefan Institute

• Ishibashi Yoshihiro

  Department Of Applied Physics Graduate School Of Engineering Nagoya University

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