运用原子力显微术AFM (atomic force microscopy, AFM)观察了ADP晶体生长时相界面上动态微观形貌的变化并测算了台阶传播速率.实验结果表明,在相变驱动力介于0.005~0.05κT/ωs,生长温度介于20~40℃之间时,相变界面表现出台阶面的基本特征;相变界面上台阶推移的动力学系数体现出溶质输运趋向于体扩散控制;微晶融合的过程说明ADP晶体生长中,微晶融入与大分子晶体的同类过程有所不同,不会形成晶体缺陷.
参考文献
[1] | Barvinschi F.;Santailler JL.;Duffar T.;Nicoara I. .Pseudo-transient heat transfer in vertical Bridgman crystal growth of semi-transparent materials[J].Modelling and simulation in materials science and engineering,1998(6):691-700. |
[2] | Vizman D.;Nicoara D.;Nicoara I. .ON THE FACTORS AFFECTING THE ISOTHERM SHAPE DURING BRIDGMAN GROWTH OF SEMI-TRANSPARENT CRYSTALS[J].Journal of Crystal Growth,1996(1):161-169. |
[3] | J A Painsner;J D Boyes;S A Kuopen et al.National Ignition Facility[J].Laser Focus World,1994,30(05):75. |
[4] | 张炳楷;颜明山;王曼芳.磷酸二氢铵单晶培养的一些问题[J].福州大学学报(自然科学版),1962(02):47-54. |
[5] | Xu Dongli;Xue Dongfeng .Chemical Bond Analysis of the Crystal Growth of KDP and ADP[J].Journal of Crystal Growth,2006,286:108. |
[6] | Herring C .Some Theorems on the Free Energies of Crystal Surfaces[J].Physical Review,1951,82:87-93. |
[7] | T.N. Thomas;T.A. Land;T. Martin;W.H. Casey;J.J. DeYoreo .AFM investigation of step kinetics and hillock morphology of the {100} face of KDP[J].Journal of Crystal Growth,2004(3/4):566-579. |
[8] | 曾丹苓.工程非平衡热动力学[M].北京:科学出版社,1991:356. |
[9] | 傅宏刚,陈国美,马天斌,赵静,于海涛.cis-HOPO分子的振动频率与精确电子结构[J].黑龙江大学自然科学学报,2001(04):77-80. |
[10] | Chernov A A .Step Bunching and Solution Flow[J].Journal of Optoelectronics and Advanced Materials,2003,5:575-587. |
[11] | 王希敏.ADP晶体快速生长及其相关性能研究[J].人工晶体学报,1994(01):33. |
[12] | Land TA.;De Yoreo JJ. .The evolution of growth modes and activity of growth sources on canavalin investigated by in situ atomic force microscopy[J].Journal of Crystal Growth,2000(1/4):623-637. |
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%