ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The effect of non-stoichiometric ordering on the electrostriction of Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) compositions (65/35) close to morphotropic phase boundary (MPB) has been studied using electrically induced strain and polarization methods. La was substituted (1 to 10 at %) on the A-site to control the degree of B-site cation ordering. The charge imbalance due to La3+ was compensated by two different mechanisms: (1) creation of B-site vacancies, and (2) changing the B-site cation ratio. Electrostriction coefficient measurements revealed dependencies on the degree of non-stoichiometric ordering and the charge compensation mechanism. A high value of the electrostriction coefficient was found to be accompanied by larger electrically-induced strains and smaller polarizations. In addition, the temperature dependence of the electrostriction coefficient was studied.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1004753621138
Permalink