中国物理B ›› 2013, Vol. 22 ›› Issue (8): 87801-087801.doi: 10.1088/1674-1056/22/8/087801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

The low-temperature sintering and microwave dielectric properties of (Zn0.7Mg0.3)TiO3 ceramics with H3BO3

沈国策, 苏桦, 张怀武, 荆玉兰, 唐晓莉   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2012-11-07 修回日期:2013-01-07 出版日期:2013-06-27 发布日期:2013-06-27
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61171047, 51132003, 51072029, and 61271038), the Program for New Century Excellent Talents in University, and the Fund from the Science and Technology Department of Sichuan Province, China.

The low-temperature sintering and microwave dielectric properties of (Zn0.7Mg0.3)TiO3 ceramics with H3BO3

Shen Guo-Ce (沈国策), Su Hua (苏桦), Zhang Huai-Wu (张怀武), Jing Yu-Lan (荆玉兰), Tang Xiao-Li (唐晓莉)   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2012-11-07 Revised:2013-01-07 Online:2013-06-27 Published:2013-06-27
  • Contact: Su Hua E-mail:uestcsh@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61171047, 51132003, 51072029, and 61271038), the Program for New Century Excellent Talents in University, and the Fund from the Science and Technology Department of Sichuan Province, China.

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摘要： The effects of the addition of H3BO3 on the microstructure, phase formation, and microwave dielectric properties of (Zn0.7Mg0.3)TiO3 ceramics sintered at temperatures ranging from 890 ℃ to 950 ℃ are investigated. H3BO3 as a sintering agent can effectively lower the sintering temperature of ZMT ceramics below 950 ℃ due to the liquid-phase effect. The microwave dielectric properties are found to strongly correlate with the amount of H3BO3. With the increase in H3BO3 content, the dielectric constant (εr) monotonically increases, but the quality factor (Q×f) reaches a maximum at 1 wt% H3BO3, and the apparent density of ZMT ceramics with H3BO3 ≥ 1 wt% gradually decreases. At 950 ℃, the ZMT ceramics with 1% H3BO3 exhibit excellent microwave dielectric properties: εr=19.8, and Q×f=43800 GHz (8.94 GHz).

关键词: ZMT ceramics, LTCC, H3BO3

Abstract: The effects of the addition of H3BO3 on the microstructure, phase formation, and microwave dielectric properties of (Zn0.7Mg0.3)TiO3 ceramics sintered at temperatures ranging from 890 ℃ to 950 ℃ are investigated. H3BO3 as a sintering agent can effectively lower the sintering temperature of ZMT ceramics below 950 ℃ due to the liquid-phase effect. The microwave dielectric properties are found to strongly correlate with the amount of H3BO3. With the increase in H3BO3 content, the dielectric constant (εr) monotonically increases, but the quality factor (Q×f) reaches a maximum at 1 wt% H3BO3, and the apparent density of ZMT ceramics with H3BO3 ≥ 1 wt% gradually decreases. At 950 ℃, the ZMT ceramics with 1% H3BO3 exhibit excellent microwave dielectric properties: εr=19.8, and Q×f=43800 GHz (8.94 GHz).

Key words: ZMT ceramics, LTCC, H3BO3

中图分类号:  (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

  • 78.20.Ci