The ferroelectric and dielectric properties of Bi4-xLaxTi3O12 (BLT) and Bi4-xLaxTi2.97V0.03O12 (BLTV) thin films deposited on (111)Pt/Ti/SiO2/Si substrates using a chemical solution method were investigated. The BLTV thin films showed a larger remanent polarization (9.6 μC/cm2) than the BLT thin films (6.5 μC/cm2), while the coercive field for both thin films was nearly the same. The capacitance of the films as a function of a small ac driving field was measured, and the data were processed using Rayleigh’s law. The results show that the Rayleigh constant of the BLT films was smaller than that of the BLTV films, indicating that the defect concentration was lower in the latter case. The superior ferroelectricity of the BLTV films was attributed to a decrease of both the (001) orientation and the defect concentration.
机构:
Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Xing, X. J.
Yu, Y. P.
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Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Yu, Y. P.
Xu, L. M.
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Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Xu, L. M.
Zhang, Y. L.
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Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Zhang, Y. L.
Li, S. W.
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Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Li, S. W.
[J].
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY,
2008,
147
(01):
: 95
-
99
机构:
Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Yan Zheng
Zhang Wei-Tao
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Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Zhang Wei-Tao
Wang Yi
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Gen Res Inst Non Ferrous Met, Inst Adv Elect Mat, Beijing 100088, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Wang Yi
Zhang Xin
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Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Zhang Xin
Li Li
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Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Li Li
Zhao Qing-Xun
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Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Zhao Qing-Xun
Du Jun
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Gen Res Inst Non Ferrous Met, Inst Adv Elect Mat, Beijing 100088, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
Du Jun
Liu Bao-Ting
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Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R ChinaHebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China