Microwave Dielectric Properties of TiO2-Added Li2ZnTi3O8 Ceramics Doped with Li2O-Al _{详细信息    查看全文}

• 作者：Ying-xiang Li ; Zhen-jun Qin ; Bin Tang ; Shu-ren Zhang…
• 关键词：Li2ZnTi3O8 ; dielectric properties ; microstructure ; LTCC
• 刊名：Journal of Electronic Materials
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：44
• 期：1
• 页码：281-286
• 全文大小：1,332 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  Electronics, Microelectronics and Instrumentation
  Solid State Physics and Spectroscopy
  
• 出版者：Springer Boston
• ISSN：1543-186X

文摘

The effect of Li2O-Al2O3-B2O3 (LAB) glass addition on phase composition, microstructure and the microwave dielectric properties of Li2ZnTi3O8 ceramics with TiO2 were investigated using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDS) and a vector network analyzer. With the addition of 17?mol% TiO2 on Li2ZnTi3O8 ceramics, the temperature coefficient of the resonant frequency (τ ?) value could be adjusted to +3.3?ppm/°C. When a small amount of LAB glass was added to the Li2ZnTi3O8?+?17?mol% TiO2 materials, the sintering temperature could be significantly lowered from 1160°C to 900°C. With increasing the LAB glass, the Q?×?f value first increased and then decreased. Typically, the 1 wt.% LAB glass-added Li2ZnTi3O8?+?17?mol% TiO2 ceramics sintered at 900°C for 4?h had good microwave dielectric properties with εr?=?26.8, Q?×?f?=?28,000?GHz and τ ??=?+?2.5?ppm/°C, which made it a promising ceramic for LTCC technology application.