Dielectric Properties of Al₂O₃/CaCu₃Ti₄O₁₂ Composite at High Frequency Range

Abstract:

The dielectric properties of CCTO with addition Al₂O₃ prepared via solid state reaction investigated and reported at 1 GHz. With addition Al₂O₃ from 20 wt% to 80 wt%, secondary phase starts appear in XRD analysis such as copper dialuminium oxide (CuAl₂O₄), calcium titanate (CaTiO₃) and titanium oxide (TiO₂). These secondary phases show great influence on morphology and grain size of Al₂O₃/ CCTO composites. Hence, the addition of only 20 wt% Al₂O₃, the dielectric constant of CCTO reduce almost 50% and tangent loss is in between 0.0028 to 0.0630 which is very low and this characterization is suitable to use in electronic application in high frequency range.

• Periodical: Materials Science Forum (Volume 888)
• Pages: 7-11
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.888.7
• Online since: March 2017
• Authors: Rosyaini Afindi Zaman, Mohamad Johari bin Abu, Mohd Fariz Ab Rahman, Wan Fahmin Faiz Wan Ali, Julie Juliewatty Mohamed, Mohd Fadzil Ain, Zainal Arifin Ahmad*
• Keywords: Al₂O₃/CCTO Composite, Dielectric Properties, High Frequency

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