含有硫/硒(S/Se)元素的部分化合物在现有中红外非线性晶体材料中占据相当重要的地位.高纯多晶原料是生长优质S/Se光学晶体的基础,但常规合成方法存在周期长、数量少等缺点.为此,针对部分S/Se化合物,我们对传统的合成方法进行优化、改进,实现GaSe,AgGaSe2,AgGaGeS4,AgGaGe5Se12等的快速合成,单次合成原料200～300 g,合成周期小于48 h,经过粉末衍射(XRD)测试表明合成的原料质量较好,能够生长出较大尺寸单晶.文中对快速合成方法的机理、存在的问题等也进行了相关讨论.
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