Yh. Chen et al., Substituent effects on the mechanical quality factor of Pb(Mg1/3Nb2/3)O-3-PbTiO3 and Pb(Sc1/2Nb1/2)O-3-PbTiO3 ceramics, J APPL PHYS, 90(3), 2001, pp. 1455-1458
The mechanical quality factor of Pb(Mg1/3Nb2/3)O-3-PbTiO3(PMN-PT) and Pb(Sc
1/2Nb1/2)O-3-PbTiO3(PSN-PT) ceramics have been investigated for composition
s close to the morphotropic phase boundary. Investigations were performed f
or various types of lower valent substituents on the B-site cation. These i
nvestigations have shown significant differences between the modified PMN-P
T and PSN-PT crystalline solutions. In PMN-PT, lower valent substitutents h
ad little effect upon the mechanical quality factor; however in PSN-PT it w
as found to be significantly increased. A crystal chemical approach is then
used to explain these differences. (C) 2001 American Institute of Physics.