A new dielectric material system of xLa(Mg1/2Ti1/2) O3-(1-x) CaTiO3 at microvave frequency

Yuan Bin Chen, Cheng Liang Huang, Che Win Row

Research output: Contribution to journalConference articlepeer-review


The dielectric properties and the microstructures of xLa(Mg 1/2Ti1/2)O3-(1-x)CaTiO3 ceramics with B2O3 additions (0.25wt%) prepared with conventional solid-state route have been investigated. Doping with B2O3 (0.25wt%) can effectively promote the densification and the dielectric properties of xLa(Mg1/2Ti1/2)O3-(1-x)CaTiO 3 ceramics. It is found that La(Mg1/2Ti 1/2)O3-(1-x)CaTiO3 ceramics can be sintered at 1400°C due to the liquid phase effect of B2O3 addition observed by Scanning Electronic Microscopy. At 1425°C, 0.5La(Mg 1/2Ti1/2)O3-0.5CaTiO3 ceramics with 0.25 wt% B2O3 addition possesses a dielectric constant (εr) of 43, a Qxf value of 24470 (at 8GHz) and a temperature coefficients of resonant frequency (τf) of-8.94 ppm/°C. As an increasing the content of La(Mg1/2Ti1/2)O3, the highest Qxf value of 30824(GHz) could be achieved for X = 0.7.

Original languageEnglish
Pages (from-to)41-46
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Publication statusPublished - 2003
EventMaterials, Integration and Packaging Issues for High - Frequency Devices - Boston, MA, United States
Duration: 2003 Dec 12003 Dec 3

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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