Article
  • Electric Properties of SrTiO3-Exoxy/Composites
  • Choi HD, Cho KY, Park CS, Yoon HG
  • SrTiO3-에폭시 복합재료의 전기적 특성
  • 최형도, 조광윤, 박찬식, 윤호규
Abstract
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 model to discribe the frequency dispersion characteristic of the complex permittivity was proposed.

SrTiO3-에폭시 복합재료의 SrTiO3함량에 따른 전자기적 특성과 복소유전율의 주파수 거동을 살펴보았다. 복합재료는 시멘트 혼합방법에 의해 혼합되었고, 측정시편은 동축형으로 만들었다. 130MHz부터 10GHz의 주파수 영역에서 network analyzer를 이용하여 복합재료의 복소투자율과 복소유전율을 구한 결과, 복소유전율은 SrTiO3함량이 증가함에 따라 증가하고, SrTiO3함량에 른 실효유전율은 대수혼합식과 비교적 잘 일치하며, 공진주파수는 본 논문에서 제시한 식과 일치 하는 것을 알았다. 또한 복초유전율의 주파수 분간거동에 대한 모델을 제시하였다.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1997; 21(6): 1039-1044

    Published online Nov 25, 1997