Xin-gui Tang, Li-li Jiang, Shu-juan Kuang, Ai-li Ding, H. L. W. Chan. Dielectric and Pyroelectric Properties of Compositionally Graded Pb(Zr1-xTix)O3 Thin Films Prepared by Sol-gel Process[J]. Chinese Journal of Chemical Physics , 2007, 20(6): 665-669. doi: 10.1088/1674-0068/20/06/665-669
Citation: Xin-gui Tang, Li-li Jiang, Shu-juan Kuang, Ai-li Ding, H. L. W. Chan. Dielectric and Pyroelectric Properties of Compositionally Graded Pb(Zr1-xTix)O3 Thin Films Prepared by Sol-gel Process[J]. Chinese Journal of Chemical Physics , 2007, 20(6): 665-669. doi: 10.1088/1674-0068/20/06/665-669

Dielectric and Pyroelectric Properties of Compositionally Graded Pb(Zr1-xTix)O3 Thin Films Prepared by Sol-gel Process

doi: 10.1088/1674-0068/20/06/665-669
Funds:  This work was supported by the Guangdong Provincial Natural Science Foundation of China (No.05001825), the project 1-BB95 (smart structures and systems based on electro- and magneto-active materials) of the Hong Kong Polytechnic University.
  • Received Date: 2007-07-30
  • Rev Recd Date: 2007-08-02
  • "Compositionally graded ferroelectric lead zirconate titanate Pb(Zr1-xTix)O3 (PZT) thin films were grown on Pt/Ti/SiO2/Si substrates by using a sol-gel process. The final structure consists of six layers, up-graded graded films starting from PbZrO3 on the Pt electrode to the top PZT(50) layer, it consists of no Ti, 10%Ti, 20%Ti, 30%Ti, 40%Ti, and 50%Ti respectively. Whereas films with opposite gradient are called down-graded graded films. Structure and dielectric properties of the graded films was investigated by X-ray diffraction, Auger electron spectroscopy and by impedance analysis. The up-graded and down-graded PZT films annealed at 600 o, exhibited the remanent polarization values of 18.0 and 24.2 1C/cm2, respectively. The typical small signal dielectric constants and loss tanffi at a frequency of 100 Hz were 523 and 0.018, 544, and 0.020, respectively, for up-graded and down-graded PZT thin films. The temperature dependence of pyroelectric coeoients of the graded PZT films was measured by a dynamic technique. From 20 o to 82 o, the pyroelectric coeoients of the up-graded and down-graded PZT films up to 374 and 407 1C/m2K, respectively."
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Dielectric and Pyroelectric Properties of Compositionally Graded Pb(Zr1-xTix)O3 Thin Films Prepared by Sol-gel Process

doi: 10.1088/1674-0068/20/06/665-669
Funds:  This work was supported by the Guangdong Provincial Natural Science Foundation of China (No.05001825), the project 1-BB95 (smart structures and systems based on electro- and magneto-active materials) of the Hong Kong Polytechnic University.

Abstract: "Compositionally graded ferroelectric lead zirconate titanate Pb(Zr1-xTix)O3 (PZT) thin films were grown on Pt/Ti/SiO2/Si substrates by using a sol-gel process. The final structure consists of six layers, up-graded graded films starting from PbZrO3 on the Pt electrode to the top PZT(50) layer, it consists of no Ti, 10%Ti, 20%Ti, 30%Ti, 40%Ti, and 50%Ti respectively. Whereas films with opposite gradient are called down-graded graded films. Structure and dielectric properties of the graded films was investigated by X-ray diffraction, Auger electron spectroscopy and by impedance analysis. The up-graded and down-graded PZT films annealed at 600 o, exhibited the remanent polarization values of 18.0 and 24.2 1C/cm2, respectively. The typical small signal dielectric constants and loss tanffi at a frequency of 100 Hz were 523 and 0.018, 544, and 0.020, respectively, for up-graded and down-graded PZT thin films. The temperature dependence of pyroelectric coeoients of the graded PZT films was measured by a dynamic technique. From 20 o to 82 o, the pyroelectric coeoients of the up-graded and down-graded PZT films up to 374 and 407 1C/m2K, respectively."

Xin-gui Tang, Li-li Jiang, Shu-juan Kuang, Ai-li Ding, H. L. W. Chan. Dielectric and Pyroelectric Properties of Compositionally Graded Pb(Zr1-xTix)O3 Thin Films Prepared by Sol-gel Process[J]. Chinese Journal of Chemical Physics , 2007, 20(6): 665-669. doi: 10.1088/1674-0068/20/06/665-669
Citation: Xin-gui Tang, Li-li Jiang, Shu-juan Kuang, Ai-li Ding, H. L. W. Chan. Dielectric and Pyroelectric Properties of Compositionally Graded Pb(Zr1-xTix)O3 Thin Films Prepared by Sol-gel Process[J]. Chinese Journal of Chemical Physics , 2007, 20(6): 665-669. doi: 10.1088/1674-0068/20/06/665-669

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