Enhancement of ferroelectricity in the compositionally graded (Pb,Sr)TiO3 thin films derived by a sol-gel process
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 37-41 |
Journal / Publication | Journal of Crystal Growth |
Volume | 286 |
Issue number | 1 |
Publication status | Published - 1 Jan 2006 |
Link(s)
Abstract
The compositionally graded Pb1-xSr xTiO3 (PST) films with a fine compositional gradient from Pb0.6Sr0.4TiO3 to Pb0.3Sr 0.7TiO3 were fabricated on LNO-buffered Pt/Ti/SiO 2/Si substrates by a sol-gel deposition method. The graded films crystallized into a pure perovskite structure and exhibited highly (1 0 0) preferred orientation after post-deposition annealing. Dielectric and ferroelectric properties were investigated as a function of temperature, frequency and direct current bias field. Dielectric constant peaks, common to a ferroelectric transition, were not observed in the temperature range of 25-250 °C within which the dielectric constant showed weak temperature dependence. This compositionally graded thin film can result in a dielectric constant more than double and a remanent polarization at least two and a half times larger than conventional PST thin films. © 2005 Elsevier B.V. All rights reserved.
Research Area(s)
- A1. Characterization, A3. Polycrystalline deposition, B1. Inorganic compounds, B2. Ferroelectric materials
Citation Format(s)
Enhancement of ferroelectricity in the compositionally graded (Pb,Sr)TiO3 thin films derived by a sol-gel process. / Zhai, Jiwei; Yao, Xi; Xu, Zhengkui et al.
In: Journal of Crystal Growth, Vol. 286, No. 1, 01.01.2006, p. 37-41.
In: Journal of Crystal Growth, Vol. 286, No. 1, 01.01.2006, p. 37-41.
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review