Electric properties of SrTiO3-epoxy composites

Hyung Do Choi, Kwang Yun Cho, Chan Sik Park, Ho Gyu Yoon

Research output: Contribution to journalArticlepeer-review


The effect of volume fraction of SrTiO3 on electromagnetic properties and the frequency dispersion behavior of the complex permittivity of the SrTiO3-epoxy composite were investigated. The composites were prepared by the cement mixing method and shaped to coaxial type. The complex permittivity and permeability were measured using a network analyzer in frequency range 130 MHz-10 GHz. The complex permittivity of the composites was found to increase as the amount of SrTiO3 increased. The logarithmic model well coincided with the effective permittivity of composite as a function of SrTiO3 volume fraction. The resonance frequency of composites was found to show good agreement with the theoretical values calculated by the equation proposed in this article. Also, a rhodel to discribe the frequency dispersion characteristic of the complex permittivity was proposed.

Original languageEnglish
Pages (from-to)1039-1044
Number of pages6
JournalPolymer (Korea)
Issue number6
Publication statusPublished - 1997


  • Composite
  • Effective permittivity
  • Frequency dispersion
  • SrTiO

ASJC Scopus subject areas

  • General Chemical Engineering
  • Polymers and Plastics
  • Materials Chemistry


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