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[1]徐军,周淼,赵焕校.铁微量掺杂对二钛酸钡陶瓷介电性能的影响[J].武汉工程大学学报,2014,(05):25-28.[doi:103969/jissn16742869201405006]
　XU Jun,ZHOU Miao,ZHAO Huan xiao.Influence of lightdoped Fe on dielectric properties of barium dititantate ceramics[J].Journal of Wuhan Institute of Technology,2014,(05):25-28.[doi:103969/jissn16742869201405006]
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铁微量掺杂对二钛酸钡陶瓷介电性能的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年05期
页码:
25-28
栏目:
材料科学与工程
出版日期:
2014-05-31

文章信息/Info

Title:
Influence of lightdoped Fe on dielectric properties of barium dititantate ceramics
文章编号:
16742869(2014)05002504
作者:
徐军; 周淼; 赵焕校
武汉工程大学材料科学与工程学院，湖北 武汉 430074
Author(s):
XU Jun; ZHOU Miao; ZHAO Huanxiao
School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430074,China
关键词:
二钛酸钡; 铁元素掺杂; 介电性能
Keywords:
barium dititantate; Fedoped; dielectric property
分类号:
TM282
DOI:
103969/jissn16742869201405006
文献标志码:
A
摘要:
采用常规固相反应法，以碳酸钡、二氧化钛和三氧化二铁为原料，制备微量铁掺杂的二钛酸钡陶瓷，研究了铁掺杂含量对二钛酸钡陶瓷的相纯度、相对密度和介电性能的影响.采用X射线粉末衍射仪检测二钛酸钡陶瓷的相成分，利用精密阻抗分析仪测量其介电性能.结果表明，微量铁元素进入了二钛酸钡晶格，能够获得单相二钛酸钡陶瓷的最大铁掺杂量在0.5%～1%之间.随着铁含量的增加，铁电相变居里温度快速减小，从未掺杂时的415 ℃降至铁含量为0.02%时的376 ℃和铁含量为0.5%时的324 ℃.同时介电常数逐渐减小，介电峰不断发生宽化，但并没有导致弛豫性铁电体的出现.微量铁元素的掺杂在实验测量误差范围内对陶瓷的密度影响不大.
Abstract:
To investigate the influence of Fedoping on the dielectric properties，the phase purity and the relative density of BaTi2O5 ceramics,singlephased Fedoped BaTi2O5 ceramics were synthesized from BaCO3,TiO2 and Fe2O3 powders by conventional solidstate reaction.The specimens were characterized by powder Xray diffraction and Fe contents that can yield pure phase BaTi2O5 were determined.The dielectric properties were measured by precesion impedance analyzer in a wide temperature range.The results show that light amount of Fe element enteres BaTi2O5 lattice and the solution limit of Fedoping in BaTi2O5 ceramics is between 0.5% and 1%; upon Fe doping,the ferroelectric phase transition temperature of the BaTi2O5 ceramics decrease rapidly,from 415 ℃ at x=0 to 376 ℃ at x=0.02% and 324 ℃ at x=0.5%.The dielectric constant decreased and dielectric peaks became broadened without dielectric relaxation.Fe doping has little effect on the density of BaTi2O5 ceramics within the limit of the experimental errors.

参考文献/References:

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相似文献/References:

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　XU Jun,ZHANG Li\|guo,HE Xiao\|ping.Growth of barium dititanium single crystals by flux method[J].Journal of Wuhan Institute of Technology,2012,(05):53.[doi:103969/jissn16742869201206013]
[2]徐军,冷浩博,伍建华.二维片状二钛酸钡颗粒的熔盐法合成[J].武汉工程大学学报,2012,(7):37.[doi:103969/jissn16742869201207008]
　XU Jun,LENG Hao bo,WU Jian hua.Synthesis of 2D platelike barium dititanate particle by molten salt method[J].Journal of Wuhan Institute of Technology,2012,(05):37.[doi:103969/jissn16742869201207008]
[3]徐军,唐甲,杨薇.锶掺杂二钛酸钡的熔盐法制备及其介电性能[J].武汉工程大学学报,2013,(06):40.[doi:103969/jissn16742869201309008]
　XU Jun,TANG Jia,YANG Wei.Synthesis of strontiumdoped barium dititanate and its dielectricproperties by molten salt method[J].Journal of Wuhan Institute of Technology,2013,(05):40.[doi:103969/jissn16742869201309008]

备注/Memo

备注/Memo:
收稿日期：20140318基金项目：教育部留学回国人员科研启动资金；湖北省教育厅科学研究重点项目（D20101504）作者简介：徐军（1970）,男，湖北武汉人，教授，博士.研究方向：电子功能材料.
更新日期/Last Update: 2014-06-15