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Chinese Physics, 2005, Vol. 14(6): 1246-1249    DOI: 10.1088/1009-1963/14/6/033
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Dependence of interface motion on pressure in ferroelectrics

Ai Shu-Tao (艾树涛)
Department of Physics, Linyi Normal University, Linyi, Shandong,276005, China
Abstract   The motion of the paraelectric-ferroelectric interface in KNbO3 under hydrostatic pressure is studied in the framework of the mean-field theory. The kink solution is applied to the calculations of the width and velocity of the interface at different pressures. The calculations are based on the experimental data for the Curie-Weiss constant and the parameter of the Ginzburg-Landau expression for the free energy. The response to hydrostatic pressure and tricritical point is investigated nonempirically.
Keywords:  Interface      Pressure      Ferroelectrics      Ginzburg-Landau Equation  
Received:  15 November 2004      Revised:  04 February 2005      Accepted manuscript online: 
PACS:  77.80.Bh  
  65.40.G- (Other thermodynamical quantities)  
Fund: Project supported by the Research Foundation Program of Linyi Normal University with grant No. YJB03004.

Cite this article: 

Ai Shu-Tao (艾树涛) Dependence of interface motion on pressure in ferroelectrics 2005 Chinese Physics 14 1246

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