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2009 , Vol. 24 >Issue 2: 371 - 373

DOI: https://doi.org/10.3724/SP.J.1077.2009.00371

研究论文

Zn-Al共掺对0.95MgTiO3-0.05CaTiO3介电性能的影响

  • 杨秀玲 ,
  • 丁士华 ,
  • 宋天秀 ,
  • 张 东
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  • 西华大学 材料科学与工程学院， 成都 610039

收稿日期: 2008-06-22

  修回日期: 2008-07-23

  网络出版日期: 2009-03-20

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Influence of Zn-Al Codoping on Dielectric Properties of 0.95MgTiO3-0.05CaTiO3 Ceramics

  • YANG Xiu-Ling ,
  • DING Shi-Hua ,
  • SONG Tian-Xiu ,
  • ZHANG Dong
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  • College of Materials Science ＆ Engineering, Xihua University, Chengdu 610039, China

Received date: 2008-06-22

  Revised date: 2008-07-23

  Online published: 2009-03-20

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摘要

采用固相反应法制备了 (Mg0.93Ca0.05Zn0.02)(Ti1-xAlx)O3介质陶瓷.研究了Zn-Al共掺杂对0.95MgTiO3-0.05CaTiO3(95MCT)陶瓷介电性能的影响.结果表明：Zn-Al共掺杂的95MCT陶瓷的主晶相为MgTiO3和CaTiO3两相结构，Zn-Al共掺杂可以抑制中间相MgTi2O5的产生，同时，有第二相CaAl2O4出现；Zn-Al共掺杂能有效地降低95MCT陶瓷的烧结温度至1300℃，改善介电性能，并对介电常数温度系数具有调节作用.当 Zn2+掺杂量为0.02mol、Al3+掺杂量为0.02mol时， 在1300℃烧结2.5h获得最佳性能：εr =20.35, tgδ=2.0×106, αc=1.78×106.

关键词： 0.95MgTiO3-0.05CaTiO3介质陶瓷; Zn-Al共掺杂; 介电性能

本文引用格式

杨秀玲 , 丁士华 , 宋天秀 , 张 东 . Zn-Al共掺对0.95MgTiO3-0.05CaTiO3介电性能的影响[J]. 无机材料学报, 2009 , 24(2) : 371 -373 . DOI: 10.3724/SP.J.1077.2009.00371

Abstract

The dielectric properties of (Mg0.95Ca0.05Zn0.02)(Ti1-xAlx)O3 ceramics prepared by conventional solid-state route were investigated. The results show that MgTiO3 and CaTiO3 are the main phases of 95MCT ceramics with codoped Zn-Al, without second phase MgTi2O5 is observed but a new phase CaAl2O4. Zn-Al additive can lower the sintering temperature of 95MCT ceramics to 1300℃, and improve the dielectric properties. Moreover, it also effectively adjusts the temperature coefficient of dielectric constant. The 95MCT ceramics with x=0.02 possess excellent dielectric properties: dielectric constant εr of 20.35, dielectric loss tgδ of 2.0×106 and temperature coefficient of dielectric constant αc value of 1.78×106.

Key words： 0.95MgTiO3-0.05CaTiO3 ceramics; Zn-Al codoped; dielectric properties

参考文献

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