Please use this identifier to cite or link to this item:
|Title:||Structure and properties of (1-x)(0.6Pb(Zn1/3Nb 2/3)O3-0.4Pb (Mg1/3Nb2/3)O 3)-xPbTiO3 thin films with perovskite phase promoted by polyethylene glycol|
|Keywords:||Ferroelectric thin film|
|Citation:||Yu, S., Yao, K., Tay, F.E.H. (2007-06). Structure and properties of (1-x)(0.6Pb(Zn1/3Nb 2/3)O3-0.4Pb (Mg1/3Nb2/3)O 3)-xPbTiO3 thin films with perovskite phase promoted by polyethylene glycol. Journal of Sol-Gel Science and Technology 42 (3) : 357-364. ScholarBank@NUS Repository. https://doi.org/10.1007/s10971-007-0744-6|
|Abstract:||The preferential formation of a pyrochlore structure is a knotty problem in the preparation of Pb(Zn1/3Nb2/3)O3 (PZN)-based thin film materials and its presence is significantly detrimental to the dielectric and piezoelectric properties. In this study, 40 mol% of PZN was replaced with Pb(Mg1/3Nb2/3)O3 (PMN) for obtaining a perovskite composition around a morphotropic phase boundary (MPB), (1-x)(0.6PZN-0.4PMN)-xPT ((1-x)PZMN-xPT, PT: PbTiO3) where x = 0.23. The thin films with this composition were prepared with a polyethylene glycol (PEG) modi-fied sol-gel method on LaAlO3 substrates. The microstructural evolution of the films on heat treatment was examined with X-ray diffraction. With the aid of PEG, the formation of the pyrochlore phase was suppressed and the perovskite phase formed directly from the amorphous gel film. The multilayer films with a thickness around 0.25 μm showed a single perovskite phase without any detectable pyrochlore structure. Microscopic images showed uniform grain size of a few tens of nanometers. The role of the polymer dramatically promoting the perovskite phase was investigated with the aid of X-ray photoelectron spectroscopy and thermal analysis. The dielectric constant of the obtained film was 4160 at 1 kHz. The film demonstrated typical ferroelectric hysteresis loops and exhibited excellent piezoelectric performance. © Springer Science + Business Media, LLC 2007.|
|Source Title:||Journal of Sol-Gel Science and Technology|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 3, 2018
WEB OF SCIENCETM
checked on Nov 26, 2018
checked on Nov 16, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.