Artículos de revistas
Experimental and theoretical study of the ferroelectric and piezoelectric behavior of strontium-doped PZT
Fecha
2002-02-01Registro en:
Journal of the European Ceramic Society. Oxford: Elsevier B.V., v. 22, n. 2, p. 209-218, 2002.
0955-2219
10.1016/S0955-2219(01)00256-4
WOS:000172523600009
Autor
Universidade Federal do Rio Grande do Norte (UFRN)
Universidade Federal de São Carlos (UFSCar)
Universidade Estadual Paulista (Unesp)
Univ Jaume
Institución
Resumen
Theoretical data using ab initio perturbed ion calculation were compared with ferroelectric and piezoelectric experimental data of strontium doped PZT. Various concentrations of SrO in PZT at constant temperature and sintering time were carried out. Experimental results, such as the remanent polarization, P-R of 6.9-8.9 muC/Cm-2, the coercive field, E-C of 6.6-7.8 kVcm, and the planar coupling factor, Kp of 0.45-0.53, were compared with the energy of Zr4+ and Ti4+ ion dislocation and the lattice interaction energy which show that strontium increment in PZT alter the energies and increase the values of piezoelectric and ferroelectric variables. Calculations of lattice energy of the rhombohedral phase show that a phase non-stability is coincident with increasing experimental values of the P-R, E-C and Kp. (C) 2001 Elsevier B.V. Ltd. All rights reserved.