全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

分凝对0.80Na_(1/2)Bi_(1/2)TiO_3-0.20BaTiO_3铁电单晶电学性能的影响

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用坩埚下降法生长了尺寸为φ12mm×70mm的0.80Na1/2Bi1/2TiO3–0.20BaTiO3(0.80NBT–0.20BT)无铅铁电单晶。通过X射线荧光分析研究了晶体中的分凝现象。结果表明该单晶沿其纵向生长方向由顶部至底部,BaTiO3(BT)含量逐渐增加,晶体棒底部BT含量为32.15%(摩尔分数,下同),而顶部BT含量为14.26%。XRD分析表明室温下晶体棒为四方相钙钛矿结构。随着BT含量增加,室温下晶体[001]方向的介电常数减小,去极化温度升高。位于晶体棒中间部位的晶体样品0.81NBT–0.19BT的压电性能最佳,室温下该样品在[001]方向的电学性能指标分别为压电系数d33=158pC/N,机电耦合系数kt=0.463。

References

[1]  PARK S E,HACKENBERGE W.High performance single crystal piezoelectrics:applications and issues[J].Curr Opin Solid State Mater Sci,2002,6(6):11–18. [2]郭益平,罗豪甦,徐海清,等.铅基弛豫型铁电单晶研究进展及其应用[J].人工晶体学报,2001,30(4):330–336.GUO Yiping,LUO Haosu,XU Haiqing,et al.J Synth Cryst(in Chi-nese),2001,30(4):330–336. [3]SUCHANICZ J.Behaviour of Na0.5Bi0.5TiO3ceramics in a.c.electric field[J].Ferroelectrics,1998,209(1):561–565. [4]TAKENAKA T,MARUYAMA K L,SAKATA K.(Bi1/2Na1/2)TiO3–BaTiO3system for lead-free piezoelectric ceramics[J].Jpn J Appl Phys,1991,30(1):2236–2240. [5]PARK S E,CHUNG S J,KIM I T,et al.Nonstoichiometry and the long-range cation ordering in crystals of(Na1/2Bi1/2)TiO3[J].J Am Ceram Soc,1994,77(10):2641–2647. [6]XU Gusheng,DUAN Ziqing,WANG Xiaofeng,et al.Growth and some electrical properties of lead-free piezoelectric crystals(Na1/2Bi1/2)TiO3and(Na1/2Bi1/2)TiO3–BaTiO3prepared by a Bridgman method[J].J Cryst Growth,2005,275(1):113–119. [7]刘洪,葛文伟,江向平,等.0.94Na1/2Bi1/2TiO3–0.06BaTiO3无铅压电单晶的生长及电学性能研究[J].人工晶体学报,2008,37(4):881–884.LIU Hong,GE Wenwei,JIANG Xiangping,et al.J Synth Cryst(in Chinese),2008,37(4):881–884. [8]BENAYAD A,SEBALD G,LEBRUN L,et al.Segregation study and segregation modeling of Ti in Pb[(Mg1/3Nb2/3)0.60Ti0.40]O3single crystal grown by Bridgman method[J].Mater Res Bull,2006,41(6):1069–1076. [9]CHU Baojin,CHEN Daren,LI Guorong,et al.Electrical properties of Na1/2Bi1/2TiO3–BaTiO3ceramics[J].J Eur Ceram Soc,2002,22(13):2115–2121. [10]YING Yuan,ZHANG Shuren,ZHOU Xiaohua,et al.Phase transition and temperature dependences of electrical properties of[Bi0.5(Na1–x–y?KxLiy)0.5]TiO3ceramics[J].Jpn J Appl Phys,2006,45(2):831–834. [11]XU Chenggang,LIN Dunmin,KWOK K W.Structure,electrical properties and depolarization temperature of(Bi0.5Na0.5)TiO3–BaTiO3lead-free piezoelectric ceramics[J].Solid State Sci,2007,10(7):934–940. [12]SETTER N,CROSS L E.The role of B-site cation disorder in diffuse phase transition behavior of perovskite ferroelectrics[J].J Appl Phys,1980,51(8):4356–4360. [13]SETTER N,CROSS L E.The contribution of structural disorder to diffuse phase transitions in ferroelectrics[J].J Mater Sci,1980,15(10):2478–2482. [14]KARTHIK C,RAVISHANKAR N,VARMA K B R.Relaxor behavior of K0.5La0.5Bi2Nb2O9ceramics[J].Appl Phys Lett,2006,89(4):0429051–0429053. [15]SHANNIGRAHI S,CHOUDARY P N P,ACHARYA H N.Phase transition in sol–gel-derived Na-modified PLZT ceramics[J].J Phys D:Appl Phys,1999,32(13):1539–1547. [16]PARK S E,SHROUT T R.Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals[J].J Appl Phys,1997,82(4):1804–1811. [17]KUWATA J,UCHINO K,NOMURA S.Dielectric and piezoelectric properties of0.91Pb(Zn1/3Nb2/3)O3–0.09PbTiO3single crystals[J].Jpn J Appl Phys,1982,21(1):1298–1302. [18]XU Guisheng,LUO Haosu,GUO Y.Growth and piezoelectric proper-ties of Pb(Mg1/3Nb2/3)O3–PbTiO3crystals by the modified Bridgman technique[J].Solid State Commun,2001,120(8):321–324. [19]HAUN M J,FURMAN E,JANG S J,et al.Thermodynamic theory of the lead zirconate-titanate solid solution system,part I:Phenomenol-ogy[J].Ferroelectrics,1989,99(1):13–25. [20]HIRUMA Y,YOSHII K.Phase transition temperature and electrical properties of(Bi1/2Na1/2)TiO3–(Bi1/2A1/2)TiO3(A=Li and K)lead-free ferroelectric ceramics[J].J Appl Phys,2008,103(4):0841211–0841217.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133