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 rhodel to discribe the frequency dispersion characteristic of the complex permittivity was proposed.
| Original language | English |
|---|---|
| Pages (from-to) | 1039-1044 |
| Number of pages | 6 |
| Journal | Polymer (Korea) |
| Volume | 21 |
| Issue number | 6 |
| Publication status | Published - 1997 |
Keywords
- Composite
- Effective permittivity
- Frequency dispersion
- SrTiO
ASJC Scopus subject areas
- General Chemical Engineering
- Polymers and Plastics
- Materials Chemistry