Phase evolution and microwave dielectric properties of TiO 2-modified (Mg0.95Co0.05)2TiO 4 ceramics

Cheng Liang Huang, Jhih Yong Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Phase evolution and microwave dielectric properties of (1 - x)(Mg 0.95Co0.05)2TiO4-xTiO2 (x = 0-1) ceramics prepared by the conventional mixed oxide route have been investigated. Increasing the TiO2 content would lead to a main phase transformation from (Mg0.95Co0.05)2TiO 4 to (Mg0.95Co0.05)TiO3, (Mg 0.95Co0.05)Ti2O5 and then TiO 2. Not only did the TiO2 addition compensate the τf, it also lowered the sintering temperature of specimen. A huge drop of Q × f occurs at a 40-60 mol% TiO2 addition was attributed to the formation of (Mg0.95Co0.05)Ti 2O5 phase. Specimen with x = 0.78 can possess an excellent combination of microwave dielectric properties: εr ∼ 24.77, Q × f ∼ 38,500 GHz and τf ∼ -1.3 ppm/°C.

Original languageEnglish
Pages (from-to)6273-6275
Number of pages3
JournalJournal of Alloys and Compounds
Volume509
Issue number21
DOIs
Publication statusPublished - 2011 May 26

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Phase evolution and microwave dielectric properties of TiO <sub>2</sub>-modified (Mg<sub>0.95</sub>Co<sub>0.05</sub>)<sub>2</sub>TiO <sub>4</sub> ceramics'. Together they form a unique fingerprint.

  • Cite this