financially supported by the National Natural Science Foundation of China(Nos.51072021,51202067,51172069 and 50972032);Ph.D.Programs Foundation of Ministry of Education of China(No.20110036110006);Fundamental Research Funds for the Central Universities(Nos.11ZG02 and12QN15)
The crack propagation and domain switching process around the indentation on the surface of barium titanate single crystal under the external electric field was investigated by atomic force microscope and polarized li...