Rapid solidification into undercooled melt of ge by means of levitation technique

Yusuke Ishibashi, Katsuhisa Nagayama, Kazuhiko Kuribayashi

研究成果: Article査読

1 被引用数 (Scopus)


Using CO2 laser equipped electro-magnetic levitator, we carried out the containerless crystallization of Ge. From the point of the interface morphologies, the relationship between growth velocities and undercoolings was classified into two regions, I and II. In region I where the plate-like needle crystals were observed, the growth velocities are expressed by two dimensional (2D) nucleation-controlled growth model. In region II, where the morphology of growing crystals changed to massive dendrites, the growth velocities are approximately expressed by linear kinetics growth model. These results indicate that with increase of undercooling, the rate-determining factor changes from 2D nucleation on the faceted interface at the reentrant corer, which was formed at the edge of the multiple twin boundaries, to random attachment of atoms on the nonfaceted interface.

ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
出版ステータスPublished - 2012 6月

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学


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