砷酸对ZTS溶液稳定性及晶体生长的影响?

功能材料, 2017, 48(1): 1120-1124. doi: 10.3969/j.issn.1001-9731.2017.01.020

砷酸对ZTS溶液稳定性及晶体生长的影响?

禹化健 ^1, , 常新安 ^2, , 陈学安 ^3, , 肖卫强 ^4, , 涂衡 ^5,

1.北京工业大学材料科学与工程学院,北京,100124

2.北京工业大学材料科学与工程学院,北京,100124

3.北京工业大学材料科学与工程学院,北京,100124

4.北京工业大学固体微结构与性能研究所,北京,100124

5.中国科学院理化技术研究所,北京,100190

基金项目: 中国科学院功能晶体与激光技术重点实验室开放课题资助项目(FCLT201401)

关键词： ZTS , 砷酸 , 亚稳区 , 诱导期 , 晶体生长

Influence of arsenic acid to ZTS solution stability and crystal growth

Keywords： ZTS , arsenic acid , metastable zone , induction period , crystal growth

以提高ZTS溶液稳定性和进一步探索其晶体生长的较佳条件为目的,选择砷酸为添加剂,通过溶液亚稳区宽度和诱导期的测定探索了砷酸对ZTS溶液稳定性的影响,采用水溶液降温法在砷酸不同添加浓度条件下进行了ZTS晶体生长实验。结果表明,ZTS溶液稳定性随着砷酸浓度的增大而增大,且砷酸的添加使 ZTS晶体的a 轴向生长速度明显加快,晶体形貌也有很大变化,晶面数目大幅减少,但晶体的晶胞参数会因微量的砷酸根离子的掺入略微增大。

For improving the stability of ZTS solution and gaining the better growth condition of the crystal growth,arsenic acid was taken into the growth system as an additive.So the stability of ZTS solution was ex-plored by measurements of the metastable zone width and induction period,then the growth experiments of ZTS crystal were done by slow-cooling method.The results show:the stability of the ZTS solution can be raised along with the increasing of arsenic acid concentration within the experiment range;arsenic acid adding can bring that the growth of ZTS crystal is accelerated significantly along a-axis and the crystal morphology is changed,the number of the crystal face reduces sharply;moreover,the cell parameters increase slightly due to the doping of trace amounts of AsO4 3- into the crystal.

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