Results 21 to 30 of about 3,222 (210)

Pyroelectric property of SrTiO3/Si ferroelectric-semiconductor heterojunctions near room temperature [PDF]

Journal of Advanced Dielectrics, 2015
A nonlinear thermodynamic formalism is developed to calculate the pyroelectric property of epitaxial single domain SrTiO3∕Si heterojunctions by taking into account the thermal expansion misfit strain at different temperatures.
Gang Bai, Dongmei Wu, Qiyun Xie, Yanyan Guo, Wei Li, Licheng Deng, Zhiguo Liu   +6 more
doaj   +1 more source

Electroactive properties of flexible piezoelectric composites

Materials Research, 2001
A flexible piezoelectric composite with 0-3 connectivity, made from Lead Zirconate Titanate (PZT) powder and vegetable-based polyurethane (PU), was doped with small amount of semiconductor powder.
Walter Katsumi Sakamoto, Edmilson de Souza, Dilip K. Das-Gupta   +2 more
doaj   +1 more source

X-ray fluoresced high-Z (up to Z = 82) K-x-rays produced by LiNbO3 and LiTaO3 pyroelectric crystal electron accelerators [PDF]

, 2003
High-energy bremsstrahlung and K X-rays were used to produce nearly background-free K X-ray spectra of up to 87 keV (Pb) via X-ray fluorescence. The fluorescing radiation was produced by electron accelerators, consisting of heated and cooled cylindrical ...
Gribkov S. P., James D. Brownridge, Kim D. W., Kortov V. S., Lang S. B., Stephen M. Shafroth   +5 more
core   +3 more sources

Dielectric to pyroelectric phase transition induced by defect migration

New Journal of Physics, 2015
Subjecting strontium titanate single crystals to an electric field in the order of 10 ^6 V m ^−1 is accompanied by a distortion of the cubic crystal structure, so that inversion symmetry vanishes and a polar phase is established.
Juliane Hanzig, Erik Mehner, Sven Jachalke, Florian Hanzig, Matthias Zschornak, Carsten Richter, Tilmann Leisegang, Hartmut Stöcker, Dirk C Meyer   +8 more
doaj   +1 more source

Improvement of Pyroelectric Cells for Thermal Energy Harvesting

Sensors, 2012
This study proposes trenching piezoelectric (PZT) material in a thicker PZT pyroelectric cell to improve the temperature variation rate to enhance the efficiency of thermal energy-harvesting conversion by pyroelectricity.
Jing-Chih Ciou, An-Shen Siao, Chun-Ching Hsiao   +2 more
doaj   +1 more source

Improved Response of ZnO Films for Pyroelectric Devices

Sensors, 2012
Increasing the temperature variation rate is a useful method for enhancing the response of pyroelectric devices. A three-dimensional ZnO film was fabricated by the aerosol deposition (AD) rapid process using the shadow mask method, which induces lateral ...
Shih-Yuan Yu, Chun-Ching Hsiao
doaj   +1 more source

A Strip Cell in Pyroelectric Devices

Sensors, 2016
The pyroelectric effect affords the opportunity to convert temporal temperature fluctuations into usable electrical energy in order to develop abundantly available waste heat.
An-Shen Siao, Ching-Kong Chao, Chun-Ching Hsiao   +2 more
doaj   +1 more source

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

Advanced Science, 2022
In the past century, ferroelectrics are well known in electroceramics and microelectronics for their unique ferroelectric, piezoelectric, pyroelectric, and photovoltaic effects.
Wen Dong, Hongyuan Xiao, Yanmin Jia, Long Chen, Huangfu Geng, Syed Ul Hasnain Bakhtiar, Qiuyun Fu, Yiping Guo   +7 more
doaj   +1 more source

Composition-induced non-ergodic–ergodic transition and electrocaloric evolution in Pb(1−1.5x)La(x)Zr(0.8)Ti(0.2)O(3) relaxor ferroelectric ceramics

IET Nanodielectrics, 2019
Relaxor ferroelectrics, with polar nanoregions (PNRs), are good candidates for electrocaloric (EC) refrigeration. This study investigates the EC performance of the Pb(1−1.5x)La(x)Zr(0.8)Ti(0.2)O(3) relaxor ferroelectric ceramics by the direct measurement
Junjie Li, Ruowei Yin, Xiaopo Su, Jianting Li, Shiqiang Qin, Qiumei Wei, Mankang Zhu, Dong Guo, Lijie Qiao, Yang Bai   +9 more
doaj   +1 more source

Domain-Wall Enhanced Pyroelectricity

Physical Review X
Ferroelectric domain walls are not just static geometric boundaries between polarization domains; they are, in fact, dynamic and functional interfaces with the potential for diverse technological applications.
Ching-Che Lin, Yihao Hu, Jaegyu Kim, Djamila Lou, Ashwath Bhat, Pravin Kavle, Tae Yeon Kim, Chris Dames, Shi Liu, Lane W. Martin   +9 more
doaj   +1 more source