Study of (1-x)ZnAl2O4-xSiO2 spinel structures as microwave dielectric materials

Mohd Syafiq Zulfakar, Huda Abdullah, Wan Nasarudin Wan Jalal, Zalita Zainuddin, Sarada Idris

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Sol-gel method was used to synthesize zinc aluminate (ZnAl 2O4) dispersed into silica matrix with different compositions of x. Morphological structure of (1-x)ZnAl2O 4-xSiO2 samples were investigated by field emission scanning electron microscope (FESEM) and X-ray diffractometer (XRD). The FESEM images showed spherical structures and agglomerated particles occurred inside the samples. XRD analysis indicated the cubic phase formation of the samples. The crystallite size, D was calculated and it was found that the crystallite size are slightly increased from 8 to 17 nm. FTIR spectra analysis shows that the water presence in the samples and also the presence of nitrate group. The dielectric properties have been measured, ε r value was found to be around 13.0. The S11 parameter analysis shows the samples was resonated at 2.40 GHz and gives different values of bandwidth for microstrip patch antenna application.

Original languageEnglish
Pages (from-to)413-420
Number of pages8
JournalJournal of Sol-Gel Science and Technology
Volume71
Issue number3
DOIs
Publication statusPublished - 2014

Fingerprint

Diffractometers
Crystallite size
Microstrip antennas
Field emission
spinel
Electron microscopes
Microwaves
Scanning
microwaves
X rays
Silicon Dioxide
Nitrates
Dielectric properties
Spectrum analysis
Sol-gel process
Zinc
diffractometers
Silica
field emission
Bandwidth

Keywords

  • Cubic phase
  • Dielectric
  • Return loss
  • Sol-gel method
  • Zinc aluminate

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Biomaterials
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Study of (1-x)ZnAl2O4-xSiO2 spinel structures as microwave dielectric materials. / Zulfakar, Mohd Syafiq; Abdullah, Huda; Jalal, Wan Nasarudin Wan; Zainuddin, Zalita; Idris, Sarada.

In: Journal of Sol-Gel Science and Technology, Vol. 71, No. 3, 2014, p. 413-420.

Research output: Contribution to journalArticle

Zulfakar, Mohd Syafiq ; Abdullah, Huda ; Jalal, Wan Nasarudin Wan ; Zainuddin, Zalita ; Idris, Sarada. / Study of (1-x)ZnAl2O4-xSiO2 spinel structures as microwave dielectric materials. In: Journal of Sol-Gel Science and Technology. 2014 ; Vol. 71, No. 3. pp. 413-420.
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AU - Zainuddin, Zalita

AU - Idris, Sarada

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