Abstract
Dielectric response and pyroelectric current as a function of temperature for Pb (Mg1/3Nb2/3)1-xTixO3 (x=0, 0.1, 0.2, 0.4, designated as PMN (1-x)/x) ferroelectric ceramics have been measured. Spontaneous and field-induced normal ferroelectric relaxor ferroelectric-paraelectric phase transition have been observed clearly. Based on the structural characteristics of this perovskite ferroelectric system, a dynamic structural model for polar-microregions (PNMR) was proposed. Using the Vogel-Fulcher relation, the temperature at dielectric permittivity maximum and frequency can be fitted very well.
Original language | English |
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Pages (from-to) | 267-272 |
Number of pages | 6 |
Journal | Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research |
Volume | 13 |
Issue number | 3 |
State | Published - Jun 1999 |
Externally published | Yes |