Growth Process of BaTiO_3 Butterfly Crystals

概要

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Growth process of the BaTiO_3 butterfiy twinned crystals was observed in the region of l160 to 880℃ by stopping the growth at different periods. The process seems to consist of two different ways, namely a relatively rapid two-dimensional growth above 1,000℃ and a slow thickening one throughout the crystalgrowth. On the otller hand, growth process of the (Ba,Sr)TiO_3 butterfly crystals was also observed. The Sr content in the crystal lattice increased below 1,000℃, where thickening growth is dominant. Thus the thickening growth of the butterfly crystals also shows different behaviors bounded at 1000℃. These two different growth behaviors probably originate from a large degree of supersaturation above 1,000℃ and a small one below 1,000℃ developing in the molten solution of KF-BaTiO_3. The explanations for the two Growth behaviors seem reasonable referring the solubility data for the KF-BaTiO_3 sytem.
社団法人日本物理学会の論文
1965-02-05