Paper Title:
Influence of Oxygen Vacancies on the Polarization Properties in Bi4Ti3O12 Ferroelectric Single Crystals
  Abstract

Measurements of the leakage-current and polarization properties in bismuth titanate (Bi4Ti3O12) along the a axis show that the crystals grown in air followed by air annealing at 700oC had a superior remanent polarization of 48 μC/cm2 as well as a low leakage current density of the order of 10-9 A/cm2. The annealing at a high oxygen partial pressure of 35MPa (700oC) resulted in a higher leakage current, indicating that electron holes arising from the incorporation of oxygen at oxygen vacancies act as detrimental carriers for electrical conduction at room temperature. A crystal growth under high-pressure oxygen atmosphere and subsequent annealing at a moderate oxygen partial pressure is proposed to be advantageous for suppressing the vacancy formation and for attaining a large remanent polarization as well as a high insulating property of the Bi4Ti3O12 system.

  Info
Periodical
Edited by
Keiichi Katayama, Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki
Pages
19-22
DOI
10.4028/www.scientific.net/KEM.320.19
Citation
Y. Noguchi, T. Matsumoto, M. Miyayama, "Influence of Oxygen Vacancies on the Polarization Properties in Bi4Ti3O12 Ferroelectric Single Crystals", Key Engineering Materials, Vol. 320, pp. 19-22, 2006
Online since
September 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Gui Xia Dong, Wei Liu
Chapter 1: Materials Properties
Abstract:The electrical and dielectric properties of Ba0.3Sr0.7TiO3 (BST), as a function of annealed temperature and oxygen partial...
1059
Authors: De Yin Zhang, Wei Qian, Kun Li, Jian Sheng Xie
Chapter 10: Functional Materials
Abstract:The Ion Beam Enhanced Deposited (IBED) lithium tantalate (LiTaO3) thin film samples with Al/LiTaO3/Pt electrode...
1418
Authors: Wen Wu Zhong, Fa Min Liu, Qin Yi Shi, Wei Ping Chen
Chapter 1: Advanced Materials Science
Abstract:Al and Sb codoped ZnO thin films were prepared through a sol-gel spin coating method on glass substrates and annealed in different...
42