Title :
Study on dielectric ageing phenomena of PMW-PZ-PT ceramics
Author :
Gui, Z.L. ; Wang, Y. ; Wan, D.M. ; Li, L.T. ; Zhang, X.W.
Author_Institution :
Dept. of Mater., Tsinghua Univ., Beijing, China
Abstract :
The behaviors of dielectric ageing of lead magnesium tungstate-lead zirconate titanate (PMW-PZT) ceramics satisfying X7R standard were investigated. It was found that this ceramic demonstrated the following characteristics: it could reach stability rapidly, the dielectric constant showed an apparent decrease with temperature, and the degree of ageing related to temperature could make the E-T curve appear as a dual peak, thus, it exerted an effect on the temperature coefficient of capacitance
Keywords :
ageing; lead compounds; magnesium compounds; permittivity measurement; piezoceramics; PMW-PZ-PT ceramics; Pb(MgxWyZrzTiw)O3-aZnO-bSiO 2; Pb(MgWZrTi)O3-ZnO-SiO2; X7R standard; dielectric ageing; dielectric constant; dual peak E-T curve; lead magnesium tungstate-lead zirconate titanate ceramics; stability; temperature coefficient of capacitance; Aging; Ceramics; Dielectric constant; Dielectric losses; Dielectric materials; Electrodes; Ferroelectric materials; Magnesium; Temperature; Titanium compounds;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.414134
