Temperature Dependence of the Electric Field Induced Strains in Pb (Mg_1/3Nb_2/3)O₃-Based Relaxor Ferroelectrics

Local Ordering in Pb-based Relaxor Ferroelectrics

Influence of Cation Order on the Electric Field-Induced Phase Transition in Pb(Mg1/3Nb2/3)O3-Based Relaxor Ferroelectrics

The effect of cation ordering on an electric field-induced relaxor to normal ferroelectric phase transition in Pb(Mg1/3Nb2/3)O3 (PMN)-based ceramics was investigated. Both A-site La doping and B-site Sc doping were found to enhance the chemical ordering in these relaxor ceramics. However, the enhanced chemical orderings showed different impacts on the dielectric and ferroelectric properties in ...

Field-induced percolation of polar nanoregions in relaxor ferroelectrics.

A first-principles-based effective Hamiltonian is used to investigate low-temperature properties of Ba(Zr,Ti)O(3) relaxor ferroelectrics under an increasing dc electric field. This system progressively develops an electric polarization that is highly nonlinear with the dc field. This development leads to a maximum of the static dielectric response at a critical field, E(th), and involves four d...

Preparation and Field-Induced Electrical Properties of Perovskite Relaxor Ferroelectrics

(111)-oriented and random oriented Pb0.8Ba0.2ZrO3 (PBZ) perovskite relaxor ferroelectric thin films were fabricated on Pt(111)/TiOx/SiO2/Si substrate by sol-gel method. Nano-scaled antiferroelectric and ferroelectric two-phase coexisted in both (111)-oriented and random oriented PBZ thin film. High dielectric tunability (i = 75%, E = 560 kV/ cm ) and figure-of-merit (FOM ~ 236) at room temperat...

Thermally Induced Coarsening of the Chemically Ordered Domains in Pb(Mg1/3Nb2/3)O3 (PMN)-Based Relaxor Ferroelectrics

The effect of different tetravalent octahedral-site substitutions (M 5 Zr, Tb, and Ce) on the stability of the 1;1 chemically ordered phase in Pb(Mg1/3Nb2/3)O3 (PMN) relaxor ferroelectrics were investigated using X-ray diffractometry and transmission electron microscopy. In their as-sintered form, all the samples adopted a phase-separated microstructure that consisted of nanosized 1;1 ordered d...