Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (07): 712-716.doi: 10.3866/PKU.WHXB20040709

• ARTICLE • Previous Articles     Next Articles

Dynamics on Microdomain-Macrodomain Transition of Relaxor Ferroelectrics

Zhang Dong-Jie;Yao Xi   

  1. Laboratory of Materials Science, Nanjing Normal University,Nanjing 210097;Electronic Materials Research Laboratory, Xi′an Jiaotong University, Xi′an 710049
  • Received:2003-12-22 Revised:2004-03-01 Published:2004-07-15
  • Contact: Zhang Dong-Jie

Abstract: The Pb-based complex perovskite relaxor ferroelectrics (RFE) of Pb(Mg1/3Nb2/3)O3(PMN) and Pb(Zn1/3Nb2/3)O3(PZN) ceramics were prepared by conventional methods. The dynamics on microdomain-macrodomain transition of relaxor ferroelectrics was investigated by using amended local freezing glass-model. The dynamics on microdomain growth was also studied. The result shows that microdomain-macrodomain transition is a quantum transition process, while its driving forces are mainly heating force and energy force. The stability of the microdomain-macrodomain transition in RFE is judged by both the activating energy and state parameter. The stability of the microdomain growth was judged by the K value of stability.

Key words: Relaxor ferroelectrics, Microdomain, Macrodomain, Growth, Dynamics