采用底部冷却高温熔剂法(BCSG)成功地生长了BaTiO3改性PZNT91/9晶体,其中最大晶体(J3)尺寸达15 mm×13 mm,晶体呈浅黄色,箭头形.采用1～1.6 L/min的氧气流速能有效引发成核,而且通过康泰尓电阻丝实现点冷,可以有效控制成核数目.XRD分析表明:添加BaTiO3的晶体为纯钙钛矿相,晶体显露面为{001}面,说明添加BaTiO3能有效抑制焦绿石相,促进钙钛矿相的形成.
参考文献
| [1] | Kuwata J;Uchino K;Nomura S .Dielectric and Piezoelectric Properties of 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 Single Crystals[J].Japanese Journal of Applied Physics,1982,21:1298-1302. |
| [2] | Park SE.;Shrout TR. .ULTRAHIGH STRAIN AND PIEZOELECTRIC BEHAVIOR IN RELAXOR BASED FERROELECTRIC SINGLE CRYSTALS[J].Journal of Applied Physics,1997(4):1804-1811. |
| [3] | Uchino K. .High electromechanical coupling piezoelectrics: relaxer and normal ferroelectric solid solutions[J].Solid state ionics,1998(1/4):43-52. |
| [4] | 徐家跃.新型弛豫铁电单晶及其超声医学应用[J].硅酸盐学报,2003(11):1091-1095. |
| [5] | 曹林洪,姚熹,徐卓,惠曾哲.铅基弛豫铁电单晶体的生长技术[J].材料科学与工艺,2007(01):27-30. |
| [6] | Jang H M;Oh S H;Moon J H .Thermodynamic Stability and Mechanisms of Formation and Decomposition of Perovskite Pb(Zn1/3Nb2/3)O3 Prepared by the PbO Flux Method[J].Journal of the American Ceramic Society,1992,75:82-88. |
| [7] | Shrout T R;Halliyal A .Preparation of Lead-Based Ferroelectric Relaxors for Capacitors[J].Journal of American Ceramic Society Bulletin,1987,66:704-711. |
| [8] | Swartz S L;Shrout T R .Fabrication of Perovskite Lead Magnesium Niobate[J].J Mater Res Bull,1982,17(10):1245-1250. |
| [9] | Halliyal A;Kumar U;Newnham R E et al.Stabilization of the Perovskite Phase and Dielectric Properties of Ceramics in the Pb(Zn1/3Nb2/3)O3-BaTiO3 System[J].Journal of American Ceramic Society Bulletin,1987,66(04):671-676. |
| [10] | 徐家跃,范世(马岂),孙仁英.0.91Pb（Zn1/3Nb2/3）O3-0.09PbTiO3的析晶行为及助溶剂法生长[J].硅酸盐学报,2002(06):721-724. |
| [11] | Chen W;Ye Z-G .Top-seeded solution Growth and Characterization of Piezo-/ferroelectric(1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 Single Crystals[J].Journal of Crystal Growth,2001,233:503-511. |
| [12] | W. CHEN;Z.-G. YE .Top-cooling-solution-growth and characterization of piezoelectric 0.955Pb(Zn_(1/3)Nb_(2/3))O_(3)-0.045PbTiO_(3) [PZNT] single crystals[J].Journal of Materials Science,2001(18):4393-4399. |
| [13] | Zhang L.;Ye ZG.;Dong M. .Flux growth and characterization of the relaxer-based Pb[(Zn1/3Nb2/3)(1-x)Ti-x]O-3 [PZNT] piezocrystals[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2000(2/3):96-104. |
| [14] | 闵乃本.晶体生长物理基础[M].上海:上海科学技术出版社,1982 |
| [15] | 许桂生,罗豪,仲维卓.铅基复合钙钛矿型弛豫铁电单晶的生长基元与生长机理I．PMNT单晶的表面形貌、负晶结构及生长基元的组装与拆分[J].化学学报,2000(02):172. |
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