Synthesis, Growth of Crack-Free Large-Size BaGa4Se7 Crystal, and Annealing Studies
| Autor: | Chunhui Yang, Jiyong Yao, Zhuang Li, Yicheng Wu, Luo Xiaoyu, Yangwu Guo, Zuotao Lei |
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| Rok vydání: | 2018 |
| Předmět: |
Liquid metal
Materials science 010405 organic chemistry business.industry Vapor pressure Annealing (metallurgy) General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences Metal Crystal Nonmetal visual_art Attenuation coefficient visual_art.visual_art_medium Optoelectronics General Materials Science Crystallite business |
| Zdroj: | Crystal Growth & Design. 19:1282-1287 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.8b01681 |
| Popis: | The newly developed IR nonlinear optical (NLO) material BaGa4Se7(BGSe) has aroused intense research interest owing to its excellent overall properties and outstanding IR laser output performance. In this paper, the growth of high-quality large-size BGSe was investigated. To overcome the difficulty of realizing the large-scale complete reaction among the highly active metal Ba, the liquid metal Ga, and the nonmetal with high vapor pressure Se, a two temperature-zone synthetic technique was developed, and over 300 g BGSe polycrystalline raw material with high purity was synthesized at one time. To avoid the crystal cracking and increase the usage for preparing NLO device, a crystal seed with appropriate orientation was selected for vertical Bridgman technique and high-quality crystals with dimensions up to Φ40 mm × 150 mm were grown successfully. The BGSe crystals exhibit high transmittance over a wide transparent range and the absorption coefficient was estimated around 0.04 cm–1 in the range of 1–13 μm. M... |
| Databáze: | OpenAIRE |
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