Phase formation,electrical properties and morphotropic phase boundary of 0.95Pb(ZrxTi1?x)O3–0.05Pb(Mn1/3Nb2/3)O3 ceramics |
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| Authors: | Anurak Prasatkhetragarn Rattikorn Yimnirun |
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| Affiliation: | 1. Department of Materials Science, School of Science, University of Phayao, 56000 Phayao, Thailand;2. School of Physics, Institute of Science, Suranaree University of Technology, and Synchrotron Light Research Institute (Public Organization), 30000 Nakhon Ratchasima, Thailand |
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| Abstract: | Ferroelectric ceramics in specific composition of 0.95Pb(ZrxTi1?x)O3–0.05Pb(Mn1/3Nb2/3)O3 or PZT–PMnN (with x=0.46, 0.48, 0.50, 0.52, and 0.54) have been investigated in order to identify the morphotropic phase boundary (MPB) composition. The effects of Zr/Ti ratio on phase formation, dielectric and ferroelectric properties of the specimens have also been investigated and discussed. X-ray diffraction patterns indicate that the MPB of the tetragonal and rhombohedral phase lies in x=0.52. The crystal structure of PZT–PMnN appeared to change gradually from tetragonal to rhombohedral phase with increasing Zr content. The dielectric and ferroelectric properties measurements also show a maximum value (εr, tan δ and Pr) at Zr/Ti=52/48, while the transition temperature decreases with increasing Zr content. |
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