The phase transition from ferroelectric to antiferroelectric could be induced by elevating temperature. And then the much charge was released. The discharge properties of phase transition from ferroelectric to antiferroelectric were investigated for PbNb(Zr, Sn, Ti)O 3 material. The heating rate and external load dependence of current and discharge density was studied. Finally, an equivalent circuit model was set up for the discharge characteristics.
Acknowledgments
This work is supported by the Ministry of Science and Technology of China through 973 project under grant No. 20002CB613307 and the National Defensive Pre-research Fund of China under grant No. 51412040103JW0802.
Paper originally presented at AMF-4, Bangalore, India, December 12-15, 2003.