Percolative BaTiO 3/carbon-nanotube composite films employing aerosol deposition

Yoon Hyun Kim, Minoru Osada, Hong Ki Kim, Song Min Nam

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    Percolative BaTiO 3/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 BaTiO 3/ 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 BaTiO 3 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.

    Original languageEnglish
    Article number09LC07
    JournalJapanese Journal of Applied Physics
    Volume51
    Issue number9 PART 2
    DOIs
    Publication statusPublished - 2012 Sep

    Fingerprint

    Composite films
    Aerosols
    Carbon nanotubes
    aerosols
    carbon nanotubes
    composite materials
    Multiwalled carbon nanotubes (MWCN)
    Thick films
    Powders
    Permittivity
    thick films
    permittivity
    Dielectric properties
    Raman spectroscopy
    dielectric properties
    frequency ranges
    low frequencies
    Composite materials
    room temperature

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    Cite this

    Percolative BaTiO 3/carbon-nanotube composite films employing aerosol deposition. / Kim, Yoon Hyun; Osada, Minoru; Kim, Hong Ki; Nam, Song Min.

    In: Japanese Journal of Applied Physics, Vol. 51, No. 9 PART 2, 09LC07, 09.2012.

    Research output: Contribution to journalArticle

    Kim, Yoon Hyun ; Osada, Minoru ; Kim, Hong Ki ; Nam, Song Min. / Percolative BaTiO 3/carbon-nanotube composite films employing aerosol deposition. In: Japanese Journal of Applied Physics. 2012 ; Vol. 51, No. 9 PART 2.
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