中国物理B ›› 2006, Vol. 15 ›› Issue (6): 1364-1369.doi: 10.1088/1009-1963/15/6/039

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Paraelectric--ferroelectric interface dynamics induced by latent heat transfer and irreversibility of ferroelectric phase transitions

艾树涛   

  1. Department of Physics and Institute of Condensed Matter Physics, Linyi Normal University,Linyi 276005, China
  • 收稿日期:2006-01-31 修回日期:2006-02-28 出版日期:2006-06-20 发布日期:2006-06-20
  • 基金资助:
    Project supported by the Research Foundation Program (Grant No YJB03004) and the Key Construction Program of LinyiNormal University.

Paraelectric--ferroelectric interface dynamics induced by latent heat transfer and irreversibility of ferroelectric phase transitions

Ai Shu-Tao (艾树涛)   

  1. Department of Physics and Institute of Condensed Matter Physics, Linyi Normal University,Linyi 276005, China
  • Received:2006-01-31 Revised:2006-02-28 Online:2006-06-20 Published:2006-06-20
  • Supported by:
    Project supported by the Research Foundation Program (Grant No YJB03004) and the Key Construction Program of LinyiNormal University.

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摘要： The temperature gradients that arise in the paraelectric--ferroelectric interface dynamics induced by the latent heat transfer are studied from the point of view that a ferroelectric phase transition is a stationary, thermal-electric coupled transport process. The local entropy production is derived for a ferroelectric phase transition system from the Gibbs equation. Three types of regions in the system are described well by using the Onsager relations and the principle of minimum entropy production. The theoretical results coincides with the experimental ones.

Abstract: The temperature gradients that arise in the paraelectric--ferroelectric interface dynamics induced by the latent heat transfer are studied from the point of view that a ferroelectric phase transition is a stationary, thermal-electric coupled transport process. The local entropy production is derived for a ferroelectric phase transition system from the Gibbs equation. Three types of regions in the system are described well by using the Onsager relations and the principle of minimum entropy production. The theoretical results coincides with the experimental ones.

Key words: ferroelectric phase transition, interface dynamics, irreversible thermodynamics

中图分类号: 

  • 77.80.Bh
65.40.G- (Other thermodynamical quantities) 68.35.Ja (Surface and interface dynamics and vibrations) 68.35.Md (Surface thermodynamics, surface energies)