Please use this identifier to cite or link to this item:
Title: Hydrogen-related dynamic dielectric behavior of barium titanate single crystals
Authors: Chen, W. P.
Wang, Yu
Chan, Helen L. W.
Luo, Haosu
Subjects: Barium compounds
Ferroelectric materials
Ion mobility
Vacancies (crystal)
Issue Date: 18-May-2006
Publisher: American Institute of Physics
Source: Applied physics letters, 18 May 2006, v. 88, 202906, p. 1-3
Abstract: Barium titanate single crystals had been placed in 0.01M NaOH solution to deposit hydrogen on their electrodes through the electrolysis of water. Two kinds of time-dependent changes in dielectric properties of the single crystals were observed: One occurred in the course of hydrogen deposition and the other lasted for a long period of time after the deposition. The diffusion of hydrogen and in and out of the single crystals may be the cause for the changes. This hydrogen-related dynamic dielectric behavior clearly shows that hydrogen is an important mobile ion other than oxygen vacancy in perovskite-type lattice. Extra attention should be paid to the role of hydrogen in time-dependent property changes, including resistance degradation and ferroelectric aging, of perovskite-type ferroelectric titanates.
Rights: © 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in W.P. Chen et al. Appl. Phys. Lett. 88, 202906 (2006) and may be found at
Type: Journal/Magazine Article
ISSN: 0003-6951
Appears in Collections:MRC Journal/Magazine Articles
AP Journal/Magazine Articles

Files in This Item:
File Description SizeFormat 
titanate_06.pdf73.11 kBAdobe PDFView/Open

All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated. No item in the PolyU IR may be reproduced for commercial or resale purposes.