A_2O(A=Na, K)-MoO_3フラックス蒸発法による六方両錐ルビー結晶の育成

概要

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Red and transparent ruby crystals have been successfully grown by a evaporation method of A_2O(A=Na, K)-MoO_3 fluxes. The grown crystals were up to 3.4×2.2mm in size. The evaporation loss of the fluxes (A_2O+MoO_3) decreased linearly with an increase in the amount of A_2O when the holding time was fixed at 5h. As a result, relatively large crystals were grown from the A_2O-MoO_3 fluxes as compared with the solo MoO_3 flux (max. 1.8×1.7mm), because time to grow crystals could be lengthened. The influence of a variety of A_2O on ruby crystal growth was hardly observed in our study. The basic form of the ruby crystals was a hexagonal bipyramid bounded by twelve well-developed {1123} faces, and showed the peculiar shape to the MoO_3 system fluxes.
社団法人日本セラミックス協会の論文
2005-11-01