(Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54(β=0.1~0.5)陶瓷的微波介电性能
Microwave Dielectric Properties of (Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54(β=0.1-0.5)Ceramics
摘 要
采用固相合成法制备了(Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54(β=0.1~0.5)系列微波介质陶瓷,并对其进行了物相组成、显微结构分析和微波介电性能测试.结果表明:当β≤0.4时,(Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54陶瓷为单相柱状的类钙钛矿钨青铜结构固溶体;当β>0.4时,陶瓷内出现第二相BaTi6O13;随着La3+含量的增加,陶瓷的介电常数εr和谐振频率温度系数τf单调上升,品质因数Qf线性减小;当β=0.4时陶瓷的微波介电性能最佳,εr=100.23,Qf=5 110 GHz,τf=19.3×10-6/℃,其εr值远高于Ba6-3xSm8+2xTi18O54陶瓷的,且谐振频率温度系数近似为零.
类钙钛矿钨青铜结构固溶体
微波介电性能
microwave dielectric ceramic
perovskite-like tungsten bronze structure solid solution
microwave dielectric property
Abstract
Microwave dielectric ceramics of (Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54(β=0.1-0.5)were prepared by solid reaction method.The phase composition,microstructure and microwave dielectric properties were investigated.The results show that a single column solid solution with perovskite-like tungsten bronze structure was observed in (Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54 ceramics when β≤0.4.A secondary phase of BaTi6O13 appeared when β>0.4.The dielectric constant εr and the temperature coefficient τf of resonant frequency monotonically increased with increasing La3+ content.The β-value exhibited a negative effect on quality factor.Optimal microware dielectric properties were achieved in the ceramic as the β=0.4 with εr of 100.23,Qf of 5 110 GHz and τf of 19.3×10-6/℃.The εr -value of the ceramic was better than that of Ba6-3xSm8+2xTi18O54 ceramic.And the temperature coefficient of resonant frequency was near zero.
中图分类号 TQ174
所属栏目 材料性能及其应用
基金项目 国防科工委基金资助项目
收稿日期 2009/4/23
修改稿日期 2009/12/7
网络出版日期
作者单位点击查看
备注谭颖(1984-),女,江苏南京人,硕士研究生.
引用该论文: TAN Ying,SHEN Chun-ying,QIU Tai. Microwave Dielectric Properties of (Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54(β=0.1-0.5)Ceramics[J]. Materials for mechancial engineering, 2010, 34(5): 56～59
谭颖,沈春英,丘泰. (Ba0.7Sr0.3)4.8(Sm1-βLaβ)8.8Ti18O54(β=0.1~0.5)陶瓷的微波介电性能[J]. 机械工程材料, 2010, 34(5): 56～59
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】OHSATO H,NISHIGAKI S,OKUDA T.Superlattice and dielectric properties of dielectric compounds[J].J Appl Phys,1992,31:3136-3138.
【2】OHSATO H,IMAEDA M,TAKAGI Y,et al.Microwave quality factor improved by ordering of Ba and rare-earth on the tungstembronze-type Ba6-3xR8+2xTi18O54(R=La,Pr,Nd and Sm)solid solutions[J].Appl Ferro,1998,36:509-512.
【3】张迎春.铌钽酸盐微波介质陶瓷材料[M].北京:科学出版社,2005.
【4】朱建华,梁飞,汪小红,等.微波介质陶瓷材料介电性能间的制约关系[J].电子元件与材料,2005(3):32-35.
【5】ICHINOSE N,AMADA H.Preparation and microwave di-electric properties of the BaO-(Sml-xLax)203-5TiO2 ceramics system[J].J Europ Ceram Soc,2001,21:2751-2753.
【6】KAGOMIYA I,SUZUKI M,OHSATO H,et al.Microwave dielectric properties of tungstenbronze type like (Ba1-αSrα)6-3xR8+2xTi18O54 (R=Sm,Nd)solid solutions[J].J Europ Ceram Soc,2007,27:3059-3062.
【7】SHANNON R D.Dielectric polarizabilities of ions in oxides and fluorides[J].J Appl Phys,1993,73:348-366.
【8】WAKIYA N,WANG J K,SAIKI A.Synthesis and dielectric properties of Ba1-xR2x/3 Nb2O6(R: rare earth)with tetragonal tungsten bronze structure[J].J Europ Ceram Soc,1999,19:1071-1075.
【9】ZHENG X H,CHEN X M.Dielectric ceramics with tungsten-bronze structure in the BaO-Nd2O3-TiO2-Nb2O5 system[J].J Mater Res,2002,17:1664-1670.
【10】SHANNON R D.Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides[J].Acta Cryst A,1976,32:751-767.
【11】CHEN X M,LI Y.A and B site cosubstituted Ba6-3xSm8+2xTi18O54 microwave ceramics[J].J Am Ceram Soc,2002,85(3):579-584.
【2】OHSATO H,IMAEDA M,TAKAGI Y,et al.Microwave quality factor improved by ordering of Ba and rare-earth on the tungstembronze-type Ba6-3xR8+2xTi18O54(R=La,Pr,Nd and Sm)solid solutions[J].Appl Ferro,1998,36:509-512.
【3】张迎春.铌钽酸盐微波介质陶瓷材料[M].北京:科学出版社,2005.
【4】朱建华,梁飞,汪小红,等.微波介质陶瓷材料介电性能间的制约关系[J].电子元件与材料,2005(3):32-35.
【5】ICHINOSE N,AMADA H.Preparation and microwave di-electric properties of the BaO-(Sml-xLax)203-5TiO2 ceramics system[J].J Europ Ceram Soc,2001,21:2751-2753.
【6】KAGOMIYA I,SUZUKI M,OHSATO H,et al.Microwave dielectric properties of tungstenbronze type like (Ba1-αSrα)6-3xR8+2xTi18O54 (R=Sm,Nd)solid solutions[J].J Europ Ceram Soc,2007,27:3059-3062.
【7】SHANNON R D.Dielectric polarizabilities of ions in oxides and fluorides[J].J Appl Phys,1993,73:348-366.
【8】WAKIYA N,WANG J K,SAIKI A.Synthesis and dielectric properties of Ba1-xR2x/3 Nb2O6(R: rare earth)with tetragonal tungsten bronze structure[J].J Europ Ceram Soc,1999,19:1071-1075.
【9】ZHENG X H,CHEN X M.Dielectric ceramics with tungsten-bronze structure in the BaO-Nd2O3-TiO2-Nb2O5 system[J].J Mater Res,2002,17:1664-1670.
【10】SHANNON R D.Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides[J].Acta Cryst A,1976,32:751-767.
【11】CHEN X M,LI Y.A and B site cosubstituted Ba6-3xSm8+2xTi18O54 microwave ceramics[J].J Am Ceram Soc,2002,85(3):579-584.
相关信息
