本文通过差热分析（DTA）和X射线粉末衍射（XRD）方法研究了赝二元系LiF-CaAlF5的相平衡关系．该赝二元系在LiF：CaAlF5=1：1处形成一致融熔化合物LiCaAlF6，其熔点为814℃，并分别在LiF～LiCaAlF6和LiCaAlF6～CaAlF5区域形成两个共晶体系，其共晶温度分别为705℃和781℃．根据体系的相图，采用坩埚下降法生长出氟化物激光晶体Cr3＋：LiCaAlF6．
The phase equilibrium in pseudo-binary system LiF-CaAlF5 was studied by means of thermal analysis (DTA) and X-ray diffraction (XRD). A congruent melting compound LiCaAlF6 with melting point of 814℃ produces at the composition of LiF:CaAlF5=1:1. There exist two eutectic systems from LiF to LiCaAlF6 and from LiCaAlF6 to CaAlF5 with eutectic temperatures of 705℃ and 781℃ respectively. According to the proposed phase diagram, fluoride laser crystal Cr3+:LiCaAlF6 was grown by Bridgman method.
参考文献
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| [2] | Payne S A, Chase L L, Newkrik H W, et al. IEEE, J. Quantum Electronics, 1988, 24: 2243--2252. [2] Chase L L, Payne S A. Optics & |
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