Investigation of the microwave dielectric properties of Li2ZnTi5O12 ceramics

Chia Hui Su, Cheng-Liang Huang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Cubic-structured Li2ZnTi5O12 ceramics were prepared by a conventional solid-state reaction method, and their characterization and microstructure were investigated, with the microwave dielectric properties of these ceramics being studied for the first time. The relationships between the sintering temperature and the microwave dielectric properties in Li2ZnTi5O12 ceramics were also studied. The variation trend of the dielectric constant was in accordance with that of the apparent density. The Q × f and τf were correlated with the density (an extrinsic factor), FWHM (an intrinsic factor) and bond valence in these compositions, respectively. The new microwave dielectric material Li2ZnTi5O12 ceramics sintered at 1260 °C for 4 h have a dielectric constant (ϵr) of ∼38.4, a Q × f of ∼54,300 GHz (f = 5.898 GHz), and a τf ∼ 82.9 ppm/°C, and thus they are a suitable candidate for use in microwave applications.

Original languageEnglish
Pages (from-to)102-108
Number of pages7
JournalJournal of Alloys and Compounds
Volume678
DOIs
Publication statusPublished - 2016 Sep 5

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Dielectric properties
Microwaves
Permittivity
Intrinsic Factor
Full width at half maximum
Solid state reactions
Sintering
Microstructure
Chemical analysis
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "Cubic-structured Li2ZnTi5O12 ceramics were prepared by a conventional solid-state reaction method, and their characterization and microstructure were investigated, with the microwave dielectric properties of these ceramics being studied for the first time. The relationships between the sintering temperature and the microwave dielectric properties in Li2ZnTi5O12 ceramics were also studied. The variation trend of the dielectric constant was in accordance with that of the apparent density. The Q × f and τf were correlated with the density (an extrinsic factor), FWHM (an intrinsic factor) and bond valence in these compositions, respectively. The new microwave dielectric material Li2ZnTi5O12 ceramics sintered at 1260 °C for 4 h have a dielectric constant (ϵr) of ∼38.4, a Q × f of ∼54,300 GHz (f = 5.898 GHz), and a τf ∼ 82.9 ppm/°C, and thus they are a suitable candidate for use in microwave applications.",
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Investigation of the microwave dielectric properties of Li2ZnTi5O12 ceramics. / Su, Chia Hui; Huang, Cheng-Liang.

In: Journal of Alloys and Compounds, Vol. 678, 05.09.2016, p. 102-108.

Research output: Contribution to journalArticle

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