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2008/04/08(Tue) 14:00

Melt Growth of Benzophenone under Magnetic Levitation Condition

We have performed the in-situ observation experiment for crystallization of melting droplet of benzophenone (mp = 48~50℃) under the magnetic levitation condition. A benzophenone crystal stuck on a Pt wire was melted by irradiation of CO2 laser light and it has grown at temperatures controlled by a thermostatic bath in a hybrid magnet. It was found that crystals tend to grow perpendicularly to the direction of the magnetic field and that the growth mechanism changes from dendritic growth to facet growth with decreasing the supercooling degree. A large square grain was observed in the case of 450℃.

IMR, Tohoku University: K. Takahashi, I. Mogi, T. Onogi, S. Awaji, K. Watanabe

Reference: K. Takahashi, I. Mogi, T. Onogi, S. Awaji and K. Watanabe, Crystal Growth of Benzophenone under Magnetic Levitation Condition, The 8th Symposium on New Magneto-Science, Yokohama.


東北大学金属材料研究所:高橋弘紀,茂木 巌,小野木哲也,淡路 智,渡辺和雄