MEVVA源离子注入在宝石着色中的应用

APPLICATION OF ION IMPLANTATION TO SAPPHIRE COLOURATION BY MEVVA SOURCE

利用金属蒸气真空弧 ( MEVVA)离子源将金属 Fe,Co,Cr,Ti和 Nd离子注入无色人工合成蓝宝石。在一定的注入条件下和退火过程中 ,获得了不同颜色的蓝宝石。利用 RBS和 XRD分析了掺杂层中的金属元素浓度分布和物相变化 ,对退火态样品的可见光吸收谱进行了分析 ,探讨了掺杂元素种类。

Colourless synthetic sapphires are implanted with various metal ions (Fe, Co, Cr, Ti, Nd) by use of MEVVA ion source. Colouration of metal dopped sapphires is investigated by varying the conditions of ion implantation and thermal annealing. The phases of metal dopped layers in synthetic sapphires are determined by X ray diffractometer (XRD). Rutherford Backscattering Spectroscopy (RBS) has been used to analyze the distribution of metal dopped layers. The absorption of metal dopped sapphires in visible range is studied by means of UV VIS spectrometer.