학술논문
Microstructure effect on the properties of electrostrictive Pb([Mg.sub.1/3]Nb.sub.2/3)O.sub.3-PbTiO.sub.3 ceramics
Document Type
Report
Author
Source
Inorganic Materials. Oct, 2009, Vol. 45 Issue 10, p1197, 5 p.
Subject
Language
English
ISSN
0020-1685
Abstract
We have studied the effect of the mechanical activation of the starting oxide mixture on the particle size of the resulting powders and the microstructure of electrostrictive lead magnesium niobate-lead titanate ceramics. The results demonstrate that reducing the grain size of the ceramics reduces their dielectric permittivity in both weak and strong electric fields, reduces their electrostrictive coefficient M .sub.11, shifts the processes related to polarization saturation to higher electric fields, and increases the dielectric and electromechanical hystereses.