Effect of CuO additive on sintering and microwave dielectric behavior of LaAlO3 ceramics

Cheng Shing Hsu, Cheng Liang Huang

研究成果: Article同行評審

42 引文 斯高帕斯(Scopus)

摘要

The dielectric properties and the microstructures of LaAlO3 ceramics with CuO additions (0.25-1 wt%) have been investigated. The sintered LaAlO3 ceramics are characterized by X-ray diffraction spectra and scanning electron microscopy (SEM). The ceramic samples show that a dielectric constant (εr) of 19-22 and a Q × f value of 5000-48,000(at 9.7 GHz) can be obtained at low sintering temperatures of 1370-1460°C. The temperature coefficient of resonant frequency varies from -50 to -80 ppm/°C. At the level of 0.5 wt% and 1 wt% CuO additions, low Q × f value of the LaAlO3 ceramics is owing to the formation of the second phase LaAl11O18. With CuO addition, an 100-200°C reduction in sintering temperature can be achieved for the LaAlO3 ceramics.

原文English
頁(從 - 到)1939-1947
頁數9
期刊Materials Research Bulletin
36
發行號11
DOIs
出版狀態Published - 2001 9月 15

All Science Journal Classification (ASJC) codes

  • 一般材料科學
  • 凝聚態物理學
  • 材料力學
  • 機械工業

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