Large piezoelectricity and high transparency in fine-grained BaTiO3 ceramics
Large piezoelectricity and high transparency in fine-grained BaTiO3 ceramics
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细晶 BaTiO3 陶瓷具有大压电性和高透明度
DOI：
10.1063/1.5142744
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发表时间：
2020-02
影响因子：
4
通讯作者：
Zhu Kongjun
中科院分区：
文献类型：
--
作者：
Yan Kang;Chen Xinglong;Wang Fangfang;Zhu Kongjun
晶粒尺寸效应被认为是提高钛酸钡（BT）陶瓷介电和压电性能的一个重要因素。本文采用热压烧结法制备了致密细晶BT陶瓷。这种细晶粒BT不仅表现出上级的电性能，介电常数为7200，压电系数为420 pC/N，在30 kV/cm下的场致电应变为0.2%，而且在从可见光到中红外辐射光谱的宽波长范围内具有30%-60%的高透射率。通过与粗晶BT的对比研究，发现细晶BT由于其大的晶界体积分数而具有轻微的弛豫特性。小晶粒中的细畴和晶界弛豫区的共存是细晶粒BT的电学和光学性能同步增强的原因。晶粒尺寸效应被认为是提高钛酸钡（BT）陶瓷介电和压电性能的重要因素。本文采用热压烧结法制备了致密细晶BT陶瓷。这种细晶粒BT不仅表现出上级的电性能，介电常数为7200，压电系数为420 pC/N，在30 kV/cm下的场致电应变为0.2%，而且在从可见光到中红外辐射光谱的宽波长范围内具有30%-60%的高透射率。通过与粗晶BT的对比研究，发现细晶BT由于其大的晶界体积分数而具有轻微的弛豫特性。小晶粒中的细畴和晶界弛豫区的共存是细晶粒BT的电学和光学性能同步增强的原因。
Grain size effect is considered as an important factor for the enhancement of dielectric and piezoelectric properties of the barium titanate (BT) ceramics. In this work, we prepared a dense fine-grained BT ceramic using the hot-press sintering method. This fine-grained BT not only exhibits superior electrical properties with a dielectric permittivity of 7200, piezoelectric coefficient of 420 pC/N, and field-induced electrostrain 0.2% at 30 kV/cm but also possesses high transmittance of 30%–60% over a wide range of wavelength from visible to middle infrared radiation spectrum. By a comparative study with the coarse-grained BT, the fine-grained BT is found to have a slight relaxation property due to its large volume fraction of grain boundaries. The coexistence of the fine domains in small grains and the relaxor regions of grain boundaries is responsible for the synchronous enhancement of electrical and optical properties of the fine-grained BT.Grain size effect is considered as an important factor for the enhancement of dielectric and piezoelectric properties of the barium titanate (BT) ceramics. In this work, we prepared a dense fine-grained BT ceramic using the hot-press sintering method. This fine-grained BT not only exhibits superior electrical properties with a dielectric permittivity of 7200, piezoelectric coefficient of 420 pC/N, and field-induced electrostrain 0.2% at 30 kV/cm but also possesses high transmittance of 30%–60% over a wide range of wavelength from visible to middle infrared radiation spectrum. By a comparative study with the coarse-grained BT, the fine-grained BT is found to have a slight relaxation property due to its large volume fraction of grain boundaries. The coexistence of the fine domains in small grains and the relaxor regions of grain boundaries is responsible for the synchronous enhancement of electrical and optical properties of the fine-grained BT.
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大晶粒BaTiO3陶瓷表现出强压电性
DOI：
10.1063/1.4881597
发表时间：
2014-06
期刊：
Appl. Phys. Lett.
影响因子：
--
作者：
Y. Q. Wu,;X. Zhao;Y. Q. Tan;C. L. Wang
通讯作者：
C. L. Wang
弛豫铁电固溶体晶体超高压的起源
影响因子：
16.6
作者：
通讯作者：
--
影响因子：
4.6
作者：
Tan Y;Zhang J;Wu Y;Wang C;Koval V;Shi B;Ye H;McKinnon R;Viola G;Yan H
通讯作者：
Yan H
影响因子：
5.2
作者：
K. Uchino
通讯作者：
K. Uchino
影响因子：
41.2
作者：
Li, Fei;Lin, Dabin;Zhang, Shujun
通讯作者：
Zhang, Shujun