Low-temperature sintered Zn2TiO4:TiO2 with near-zero temperature coefficient of resonant frequency at microwave frequency

Chuan-Feng Shih, Wei Min Li, Ming Min Lin, Chu Yun Hsiao, Kuang Teng Hung

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

This work presents the microwave dielectric properties of TiO2 incorporated Zn2TiO4 sintered at low-temperatures. The Zn2TiO4 was synthesized using ZnO and TiO2 nanowires as starting materials. Within the interim studied (TiO2 = 0-12%), the bulk density, the dielectric constant, and the quality factor markedly increased with sintering temperature. When the TiO2 content (x) was 8% (970 °C), the value of quality factor multiples its resonant frequency of the Zn2TiO4:8% TiO2 achieved a maximum of ∼35,000 GHz. From XRD patterns, the phase stability of TiO2 added Zn2TiO4 changed when the TiO2 content exceeded 10 wt%. Further addition of TiO2 up to 12% approached zero, with high quality factor and k values of 30,000 GHz and 22, respectively. The high quality factor was attributed to the good cyrstallinity of Zn2TiO4. The fabricated Zn2TiO4:12% TiO2 ceramic is suitable for microwave dielectric applications.

Original languageEnglish
Pages (from-to)408-412
Number of pages5
JournalJournal of Alloys and Compounds
Volume485
Issue number1-2
DOIs
Publication statusPublished - 2009 Oct 19

All Science Journal Classification (ASJC) codes

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

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