本文以氯化锶和氯化钛为原料,采用控制水解法制备SrTiO3原料粉末,使用焰熔法生长了SrTiO3单晶体.晶体生长参数为:原料粉末粒度为-200+250目,炉膛气氛的氢氧比H/O为6.00,生长速度为12mm/h,获得了直径30mm,长60mm的单晶.晶体生长过程中,晶体顶部熔体的溢流是妨碍获得大尺寸完整晶体的一个最主要的问题.本文详细讨论了SrTiO3单晶体生长过程中的溢流的成因和解决办法.
参考文献
| [1] | Nassau K;Miller A E .Strontium Titanate: an Index to the Literature on Properties and the Growth of Single Crystals[J].Journal of Crystal Growth,1988,91:373. |
| [2] | Chaudhari P;Koch R H;Laibowitz R B et al.Critical-current Measurements in Epitaxial Films of YBa2Cu3O7-xCompound[J].Physical Review Letters,1987,58:2684. |
| [3] | Kwo J;Hsieh T C;Fleming R M et al.Structural and Superconducting Properties of Oritation-ordered Y1Ba2Cu3O7-x Films Prepared by Molecular-beam Epitaxy[J].Physical Review,1987,B36:4039. |
| [4] | Enomoto Y;Murakami T;Suzuki M .Largely Anisotropic Superconducting Critical Current in Epitaxially Grown Ba2YCu3O7-x Thin Film[J].Japanese Journal of Applied Physics,1987,26:L1248. |
| [5] | Chen C H;Kwo J;Hong M .Microstructure of YBa2 Cu3 O7-x Superconducting Thin Films Grown on a SrTiO3 ( 100 ) Substrate[J].Applied Physics Letters,1988,52:841. |
| [6] | Khurana A .The Tc to Beat is125 K[J].Physics Today,1988,41:21. |
| [7] | Scheel H J;G. Bednorz J;Dill P .Crystal Growth of Strontium Titanate SrTiO3[J].Ferroelectrics,1976,13:507. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%