Polarization rotation contributions to dielectric nonlinearity in 65Pb(Mg1/3Nb2/3)O3-35PbTiO3 single crystals
被引:7
作者:
Bernal, Ashley
论文数: 0引用数: 0
h-index: 0
机构:
Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USAGeorgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
Bernal, Ashley
[1
]
Bassiri-Gharb, Nazanin
论文数: 0引用数: 0
h-index: 0
机构:
Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USAGeorgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
Bassiri-Gharb, Nazanin
[1
,2
]
机构:
[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
dielectric hysteresis;
dielectric polarisation;
electric domain walls;
ferroelectric transitions;
lead compounds;
relaxor ferroelectrics;
PHASE;
D O I:
10.1063/1.3187916
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
The dielectric response of 65Pb(Mg1/3Nb2/3)O-3-35PbTiO(3) (PMN-35PT) single crystals is reported for ac field amplitudes up to similar to 3.5 kV/cm over a frequency range from 3 Hz to 1 kHz. The nonlinear dielectric response is described by a Rayleigh-like analysis, indicating extrinsic contributions from nonlinear and hysteretic motion of internal interfaces (phase boundaries and domain walls). Furthermore, the extrinsic contributions are more than five times higher in the [110]- and [001]-poled crystals than crystals poled along the [111] axis. This is attributed to the ease of the polarization vector rotation along the M-C mirror plane between orthorhombic and tetragonal phases of PMN-35PT.