Percolative BaTiO3/Carbon-Nanotube Composite Films Employing Aerosol Deposition

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概要

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• Percolative BaTiO3/multiwalled carbon nanotube (MWNT) composite thick films were developed using an aerosol deposition (AD) process at room temperature. Well-dispersed mixed powders with various volume ratios were utilized as the starting powders for AD, and dense BaTiO3/MWNT composite thick films were successfully fabricated with the starting mixed powders with 0.01 vol % MWNTs. The existence of MWNTs in the composite films was confirmed using Raman spectroscopy. The composite films show a high relative dielectric constant (657 at 1 kHz), which is approximately 7 times larger than that (91 at 1 kHz) of the BaTiO3 films. In addition, the strong frequency dispersion of the dielectric constant in the low-frequency range was confirmed for the composite films. The dielectric properties of the composite films were investigated using the dielectric mechanism used in percolative composites.

• 2012-09-25

著者

• Nam Song-Min

  Department of Electronic Materials Engineering, Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul 139-701, Korea

• Nam Song-Min

  Department of Electronic Materials Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea

• Kim Hong-Ki

  Department of Electronic Materials Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea

• Kim Yoon-Hyun

  Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan

• Osada Minoru

  Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan

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