The mechanical quality factor of Pb(Mg1/3Nb2/3)O3-PbTiO3(PMN-PT) and Pb(Sc1/2Nb1/2)O3-PbTiO3(PSN-PT) ceramics have been investigated for compositions close to the morphotropic phase boundary. Investigations were performed for various types of lower valent substituents on the B-site cation. These investigations have shown significant differences between the modified PMN-PT and PSN-PT crystalline solutions. In PMN-PT, lower valent substitutents had little effect upon the mechanical quality factor; however in PSN-PT it was found to be significantly increased. A crystal chemical approach is then used to explain these differences.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)