2) F. Meschke, A. Kolleck and G. A. Schneider, “R-curve behaviour of BaTiO3 due to stress-induced ferroeleastic domain switching”, Journal European Ceramic Soci., Vol.17, No.8, pp.1143-1149 (1997).
4) S. Hackemann and W. Pfeiffer, “Domain switching in process zones of PZT : characterization by microdiffraction and fracture mechanical methods”, J. European Ceramic Soci., Vol.23, No.1, pp.141-151 (2003).
5) T. Sakai, S. Ogawa, H. Kawamoto and H. Yanagida, “Fatigue behavior of piezoelectric ceramics under an applied electric field and stress”, J. Ceramic Soci., Japan, Vol.107, No.8, pp.743-747 (1999).