锂、钒掺杂对Bi2(Zn1/3Nb2/3)2O7陶瓷烧结温度和介电性能的影响
Effect of Li,V Dope on Sintering Temperature and Dielectric Properties of Bi2(Zn1/3Nb2/3)2O7 Ceramics
摘 要
采用固相反应法制备出了(Bi1.975Li0.025)(Zn2/3Nb4/3-xVx)O7陶瓷,研究了锂、钒掺杂对于Bi2(Zn1/3Nb2/3)2O7(BZN)陶瓷烧结温度、相结构和介电性能的影响.结果表明:锂、钒掺杂能显著降低BZN陶瓷的烧结温度,可由1 000 ℃降至860 ℃;当掺杂量x≤0.05时,陶瓷相结构保持单一的单斜焦绿石相,介电损耗出现明显的弛豫现象;当x为0.005,0.01,0.02和0.05时,陶瓷的介电弛豫峰值温度分别为125,120,112,100 ℃,介电弛豫激活能的减小使弛豫温区向低温方向移动.
掺杂
介电弛豫
介电性能
Bi2(Zn1/3Nb2/3)2O7 ceramics
dope
dielectric relaxation
dielectric property
Abstract
(Bi1.975Li0.025)(Zn2/3Nb4/3-xVx)O7(BLZNV) ceramics were prepared by solid phase reaction.The effect of(Li,V) dope on sintering temperature,phase structure and dielectric properties of Bi2(Zn1/3Nb2/3)2O7(BZN) ceramics was investigated.The results show that(Li,V) doping could decrease the sintering temperature of the BZN ceramic remarkably from 1 000 ℃ to 860 ℃.The ceramics had single monoclinal pyrochlore phase when x≤005.Relaxation appeared during dielectric loss.When x were 0.005,0.01,0.02 and 0.05,the peak temperatures of(Li,V) doped samples were 125,120,112 and 100 ℃,respectively.A shift of the relaxation peak to low temperature was caused by activation energy decreasing.
中图分类号 TM28
所属栏目 试验研究
基金项目 四川省教育厅科技基金资助项目(2006C025)
收稿日期 2009/2/20
修改稿日期 2009/8/2
网络出版日期
作者单位点击查看
备注张东(1981-),男,四川彭山人,硕士研究生.
引用该论文: ZHANG Dong,DING Shi-hua,SONG Tian-xiu,YANG Xiu-ling. Effect of Li,V Dope on Sintering Temperature and Dielectric Properties of Bi2(Zn1/3Nb2/3)2O7 Ceramics[J]. Materials for mechancial engineering, 2010, 34(2): 21～24
张东,丁士华,宋天秀,杨秀玲. 锂、钒掺杂对Bi2(Zn1/3Nb2/3)2O7陶瓷烧结温度和介电性能的影响[J]. 机械工程材料, 2010, 34(2): 21～24
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