Hongwei Chen
University of Electronic Science and Technology of China
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Publication
Featured researches published by Hongwei Chen.
Journal of Applied Physics | 2005
Chunlin Fu; Chuanren Yang; Hongwei Chen; Liye Hu
Dielectric nonlinearity is an important characteristic of ferroelectrics. Based on the characteristics of hysteresis loops and e-E curves in ferroelectric materials, a model for dielectric nonlinearity of ferroelectrics is established. It is verified by the data of barium strontium titanate thin films.
Integrated Ferroelectrics | 2006
Hongwei Chen; Chuanren Yang; Chunlin Fu; Shucheng Feng; Yafang Pei
ABSTRACT Barium strontium titanate (Ba0.6Sr0.4TiO3, short for BST) thin films were prepared by RF-magnetron sputtering. The influences of deposition conditions, such as substrate temperature and target-substrate distance, on the microstructures and non-linearities of BST thin films were investigated. The non-linearities of Ba0.6Sr0.4TiO3 thin films increase as the substrate temperature increases and/or target-substrate distance decreases.
Integrated Ferroelectrics | 2007
Chunlin Fu; Hongwei Chen; Liye Hu; Wei Cai; Chuanren Yang
ABSTRACT The interface has a crucial influence on the dielectric properties of thin films. A model, including the film thickness and the interfacial layer thickness, for dielectric nonlinearity of ferroelectric films was established. The ferroelectric film and transition layers are modeled by capacitances and resistances, and the Schottky barriers at metal/dielectric interfaces are modeled in terms of diode equivalent circuits. It is found that the increasing tendencies of the remanent polarization, dielectric constant and tunability from model are consistent with those from experiment. The results proved that the above model can describe the interface effect on dielectric nonlinearity of ferroelectric films.
Applied Surface Science | 2006
Hongwei Chen; Chuanren Yang; Chunlin Fu; Li Zhao; Zhiqiang Gao
Materials Science and Engineering B-advanced Functional Solid-state Materials | 2005
Chunlin Fu; Chuanren Yang; Hongwei Chen; Yinxin Wang; Liye Hu
Materials Letters | 2005
Chunlin Fu; Chuanren Yang; Hongwei Chen; Liye Hu; Yingxin Wang
Applied Surface Science | 2005
Chunlin Fu; Chuanren Yang; Hongwei Chen; Liye Hu; Linshan Dai
Materials Science and Engineering B-advanced Functional Solid-state Materials | 2005
Hongwei Chen; Chuanren Yang; Chunlin Fu; Yafang Pei; Liye Hu
Applied Surface Science | 2013
Wenbo Cai; Baoqing Zeng; Jianlong Liu; Jing Guo; Nannan Li; Lei Chen; Hongwei Chen
Materials Science and Engineering B-advanced Functional Solid-state Materials | 2005
Chunlin Fu; Chuanren Yang; Hongwei Chen; Yinxin Wang; Liye Hu
Collaboration
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