本文首次报道了Ca4YO(BO3)3(YCOB)晶体的坩埚下降法生长.在1600~1650℃炉温下,固液界面处的纵向温度梯度为40~60℃/cm,以0.2~0.6mm/h的生长速率,在近封闭的Pt坩埚中生长出了直径达25mm、长度超过50mm的完整透明YCOB晶体.介绍了生长工艺和原料制备,观察发现晶体中的主要宏观缺陷是包裹体.分析了包裹体生成的原因.
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