作　　者： ; ; ; ; ; ; ; ; ; (郑幼凤）; (张泽勃）;

机构地区： 中国科学院物理研究所

出　　处： 《物理学报》 1994年第6期973-978,T001,共7页

摘　　要： 报道使用Ｃ＿６０粉末，利用双炉装置，通过闭管汽相法生长Ｃ＿６０单晶的实验及结果。Ｃ＿６０单晶的质量很好，较大单晶的尺寸为０．５ｍｍ×０．６１ｍｍ×１．０ｍｍ。Ｘ射线衍射和电子衍射图的分析得到室温下Ｃ＿６０单晶为ｆ＿ｃｃ结构，确定了晶格常数，还进行了Ｒａｍａｎ光谱实验，实验结果表明，热、冷区温度及两者的温度差是影响大尺寸Ｃ＿６０单晶汽相生长的主要因素，对此进行了详细的讨论。 Millimeter-sized C_60 single crystals were grown by the vacuum sublimation of thepurified C_60 powder in a sealed vacuum quartz tube. C_60 single crystals,up to sizeof 0.5mm × 0.6mm ×1.0mm and free from solvent or C_70, had excellent faces.X-raydiffraction, electron diffraction and Raman spectra measurement were carried out todetermine the room-temperature structure of C_60 single crystals. The experimental re-sults show that the temperature T_2 of the hot end of tube, the temperature T_1 of thecold end of tube and the temperature gradient ΔT=T_2-T_1 are the primary factorsfor preparation of large C_60 single crystals. The above growth conditions were discus-sed in detail.

关 键 词： 碳团簇 单晶 汽相生长

领　　域： [理学]