DocumentCode
3363692
Title
The structural, dielectric and ferroelectric properties of La-modified bismuth titanate thin films prepared by sol-gel process
Author
Zhu, Jianguo ; Yu, Chi ; Xiao, Dingquan ; Zhang, Wen ; Yuan, Xiaowu ; Zhu, Jiliang ; Yue, Xi
Author_Institution
Dept. of Mater. Sci., Sichuan Univ., Chengdu, China
Volume
2
fYear
2000
fDate
2000
Firstpage
579
Abstract
Lanthanum modified bismuth titanate (Bi4-xLaxTi3O12 BLT-10x) ferroelectric thin films were prepared by the sol-gel method using tetrabyl titanate, bismuth nitrate and lanthanum nitrate. Polycrystalline BLT-5 thin films were obtained at relatively low annealing temperatures of 600~650°C. The intensity of XRD peaks of BLT-5 thin films increased with increasing annealing temperature. Typical coercive electric field (Ec.) and remnant polarization (Pr) for BLT-5 thin films annealed at 650°C were Ec=67 kV/cm and Pr = 11.2 μ C/cm2 , respectively. The effect of heat treatment on the crystalline and electrical properties of BLT-5 thin films was also discussed
Keywords
X-ray diffraction; annealing; bismuth compounds; dielectric hysteresis; dielectric losses; dielectric polarisation; ferroelectric thin films; lanthanum compounds; permittivity; sol-gel processing; 600 to 650 C; Bi4-xLaxTi3O12; Bi4-xLaxTi3O12 thin films; Si; XRD peak intensity; annealing temperature; coercive electric field; dielectric constant; dielectric properties; dissipation factor; ferroelectric properties; heat treatment; hysteresis loop; polycrystalline BLT-5 thin films; remnant polarization; sol-gel method; structural properties; tetrabyl titanate; Annealing; Bismuth; Dielectric thin films; Ferroelectric materials; Lanthanum; Polarization; Temperature; Titanium compounds; Transistors; X-ray scattering;
fLanguage
English
Publisher
ieee
Conference_Titel
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location
Honolulu, HI
ISSN
1099-4734
Print_ISBN
0-7803-5940-2
Type
conf
DOI
10.1109/ISAF.2000.942387
Filename
942387
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