采用光学浮区法生长了φ7 mm×70 mm的红宝石晶体.晶体的生长界面为凸界面,生长方向为<001>方向.X射线双晶摇摆曲线表明晶体具有良好的质量.研究了生长温度、旋转速率、生长速率对晶体质量的影响,确定了合理的工艺条件.通过扫描电镜、能量散射光谱仪、X射线衍射、化学腐蚀结合偏光显微镜对红宝石晶体中气泡、位错、胞状组织和溶质尾迹等缺陷进行了分析.
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