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Electrophoretic Deposition Ba0.65Sr0.35TiO3 Thick Films for Tunable Microwave Devices

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Abstract:

Pure barium strontium titanate (Ba0.65Sr0.35TiO3) and MnO2-modified barium strontium titanate (Ba0.65Sr0.35TiO3-MnO2) thick films were fabricated by electrophoretic deposition technique. The structures and morphologies of the films were analyzed. The dielectric measurements were conducted on metal-insulator-metal capacitors using platinum as the bottom electrodes and gold as the top electrodes. The dielectric constants and dissipation factors of Ba0.65Sr0.35TiO3 and Ba0.65Sr0.35TiO3-15wt% MnO2 thick films were measured at a frequency of 1 MHz. The tunabilities of 12.5% and 9.3% were obtained for Ba0.65Sr0.35TiO3 and Ba0.65Sr0.35TiO3-MnO2 thick films under an applied electric field of 15 kV/cm, respectively. The dielectric properties of the present thick films were suitable for tunable microwave device applications.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

111-113

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.111

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Online since:

April 2007

Authors:

Hao Xue, Chen Ai, Wei Zhao, He Ping Zhou

Keywords:

Ba0.65Sr0.35TiO3, Electrophoretic Deposition (EPD), Thick Film, Tunable

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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