Mn掺杂对Ba(Co_(1/3)Nb_(2/3))O_3陶瓷结构和微波性能的影响研究
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摘要
移动通讯技术的迅猛发展促进了微波陶瓷技术的进步,Ba(Co_(1/3)Nb_(2/3))O_3基复合钙钛矿微波陶瓷得到了广泛关注。以Ba(Co_(1/3)Nb_(2/3))O_3为基体材料,通过掺入Mn替代少部分高温易挥发的Co,XRD和Raman结果表明,掺入Mn可显著地提高Ba(Co_(1/3)Nb_(2/3))O_3陶瓷B位阳离子的1∶2有序度,进而提高其微波性能。且随着掺入量的增大,有序度呈现先增后减的趋势,最高为~36%。当Mn掺杂量(x)为0.015时,Ba[(C_(o0.985)Mn_(0.015))_(1/3)Nb_(2/3)]O_3陶瓷在1380℃烧结6 h可获得最佳微波性能:ε_r=31.18,Q×f=31779 GHz,τ_f=-2.35 ppm/℃。
The rapid development of mobile communication technology has promoted the development of microwave ceramic technology.Ba(Co_(1/3)Nb_(2/3))O_3-based composite perovskite microwave ceramics has attracted much attention.In this paper,with Ba(Co_(1/3)Nb_(2/3))O_3 as the matrix material,Mn was instead of a small part of Co.XRD and Raman results show that the doping of Mn can significantly improve the B-site cations by 1∶2 ordering degree of Ba(Co_(1/3)Nb_(2/3))O_3 ceramics,and then improve the microwave properties.With the increase of the amount of doping,the ordering degree increases first and then decreases up to~36%.Ba[(Co_(0.985)Mn_(0.015))_(1/3)Nb_(2/3)]O_3 ceramics sintered at 1380℃for 6h obtained the best microwave properties when the doping of Mn was 0.015:ε_r=31.18,Q·f=31779 GHz,τ_f=-2.35 ppm/℃.
The rapid development of mobile communication technology has promoted the development of microwave ceramic technology.Ba(Co_(1/3)Nb_(2/3))O_3-based composite perovskite microwave ceramics has attracted much attention.In this paper,with Ba(Co_(1/3)Nb_(2/3))O_3 as the matrix material,Mn was instead of a small part of Co.XRD and Raman results show that the doping of Mn can significantly improve the B-site cations by 1∶2 ordering degree of Ba(Co_(1/3)Nb_(2/3))O_3 ceramics,and then improve the microwave properties.With the increase of the amount of doping,the ordering degree increases first and then decreases up to~36%.Ba[(Co_(0.985)Mn_(0.015))_(1/3)Nb_(2/3)]O_3 ceramics sintered at 1380℃for 6h obtained the best microwave properties when the doping of Mn was 0.015:ε_r=31.18,Q·f=31779 GHz,τ_f=-2.35 ppm/℃.
引文
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[11]黄琦,郑勇,吕学鹏,等.微波介质陶瓷介电机理研究进展[J].电子元件与材料,2016,10(1):1-6.
[12]王哲飞,黄宝玉,王丽熙,等.Co非化学计量比对Ba(Co1/3Nb2/3)O3微波介质陶瓷性能的影响[J].南京工业大学学报(自科版),2014,36(3):12-16.
[13]吕文中,赖希伟.平行板谐振法测量微波介质陶瓷介电性能[J].电子元件与材料,2003,22(5):4-6.
[14]王哲飞,龚志杰,王丽熙,等.Ba(Co1/3Nb2/3)O3微波介质陶瓷预烧温度研究[J].人工晶体学报,2012,41(6).
[15]Chen M Y,Chia C T,Lin I N,et al.Microwave Properties of Ba(Mg1/3Ta2/3)O3,Ba(Mg1/3Nb2/3)O3,and Ba(Co1/3Nb2/3)O3Ceramics Revealed by Raman Scattering[J].Journal of the European Ceramic Society,2006,26(10-11):1965-1968.
[2]Richtmyer R D.Dielectric Resonators[M].Artech House,1939.
[3]Cros D,Tobar M E.Multi-layer microwave resonator:US,US 6882252 B1[P].2005.
[4]Cohn S B.Microwave Bandpass Filters Containing High-Q Dielectric Resonator[J].IEEE Transactions on Microwave Theory&Techniques,1968,16(4):218-227.
[5]Plourde J K,Linn D F,Jr H M O,et al.Ba2Ti9O20 as a Microwave Dielectric Resonator[J].Journal of the American Ceramic Society,2010,58(9-10):418-420.
[6]R.Ubic,I.M.Reaney,W.E.Lee.Microwave Dielectric Solid′solution Phase in System Ba O-Ln2O3-Ti O2(Ln=lanthanide cation)[J].International Materials Reviews,1998,43(5):205-219.
[7]Ahn C W,Jang H J,Nahm S,et al.Effects of Microstructure on the Microwave Dielectric Properties of Ba(Co1/3Nb2/3)O3,and(1-x)Ba(Co1/3Nb2/3)O3-xB a(Zn1/3Nb2/3)O3 Ceramics[J].Journal of the European Ceramic Society,2003,23(14):2473-2478.
[8]Molodetsky I,Davies P K.Effect of Ba(Y1/2Nb1/2)O3,and Ba Zr O3,on the Cation Order and Properties of Ba(Co1/3Nb2/3)O3 Microwave Ceramics[J].Journal of theEuropean Ceramic Society,2001,21(15):2587-2591.
[9]Ahn C W,Nahm S,Lim Y S,et al.Microstructure and Microwave Dielectric Properties of Ba(Co1/3Nb2/3)O3 Ceramics[J].JapaneseJ ournal of Applied Physics,2002,41(8):5277-5280.
[10]Kim I T,Kim Y H,Chung S.Order-Disorder Transition and Microwave Dielectric Properties of Ba(Ni1/3Nb2/3)O3Ceramics[J].Japanese Journal of Applied Physics,1995,34(34):40-96.
[11]黄琦,郑勇,吕学鹏,等.微波介质陶瓷介电机理研究进展[J].电子元件与材料,2016,10(1):1-6.
[12]王哲飞,黄宝玉,王丽熙,等.Co非化学计量比对Ba(Co1/3Nb2/3)O3微波介质陶瓷性能的影响[J].南京工业大学学报(自科版),2014,36(3):12-16.
[13]吕文中,赖希伟.平行板谐振法测量微波介质陶瓷介电性能[J].电子元件与材料,2003,22(5):4-6.
[14]王哲飞,龚志杰,王丽熙,等.Ba(Co1/3Nb2/3)O3微波介质陶瓷预烧温度研究[J].人工晶体学报,2012,41(6).
[15]Chen M Y,Chia C T,Lin I N,et al.Microwave Properties of Ba(Mg1/3Ta2/3)O3,Ba(Mg1/3Nb2/3)O3,and Ba(Co1/3Nb2/3)O3Ceramics Revealed by Raman Scattering[J].Journal of the European Ceramic Society,2006,26(10-11):1965-1968.