Temperature dependence of intrinsic and extrinsic dielectric contributions in 0.27Pb(In1/2Nb1/2)O3–0.46Pb(Mg1/3Nb2/3)O3–0.27PbTiO3 single crystals

Yang, Longbin; Zheng, Limei; Jing, Yujia; Li, Shiyang; Lu, Xiaoyan; Lü, Weiming; Zhang, Rui

doi:10.1002/pssb.201700029

Cited by 8 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[15] The coercive field can also be enhanced via doping the acceptor ions, which introduces an internal bias. [16][17][18][19] In this work, we describe a different strategy to increase the effective coercive field in a bipolar drive situation. The method of applying this bipolar pulse electric field has a remarkable effect on the degradation of ferroelectric properties.…”

Section: Introductionmentioning

confidence: 99%

Depolarization field in relaxor-based ferroelectric single crystals under one-cycle bipolar pulse drive*

Chen

Xiang

et al. 2019

Chinese Phys. B

View full text Add to dashboard Cite

The [001] c -polarized (1 − x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 (PMN−PT) single crystals are widely used in ultrasonic detection transducers and underwater acoustic sensors. However, the relatively small coercive field (∼ 2 kV/cm) of such crystals restricts their application at high frequencies because the driving field will exceed the coercive field. The depolarization field can be considerably larger in an antiparallel direction than in a parallel direction with respect to polarization when the bipolar driving cycle starts. Thus, if the direction of the sine wave signal in the first half cycle is opposite to the polarization direction, then the depolarized domains can be repolarized in the second half of the sine cycle. However, if the direction of the sine wave signal in the first half of the cycle is along the polarization direction, then the change is negligible, and the domains switched in the second half of the sine cycle cannot be recovered. The design of electric driving method needs to allow the use of a large applied field to emit strong enough signals and produce good images. This phenomenon combined with the coercive field increases with the driving frequency, thereby making the PMN−PT single crystals usable for high-frequency applications. As such, the applied field can be considerably larger than the conventionally defined coercive field.

show abstract