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

Yusuke Ishibashi, Katsuhisa Nagayama, Kazuhiko Kuribayashi

研究成果: Article

1 引用 (Scopus)

抜粋

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.

元の言語English
ページ(範囲)380-384
ページ数5
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
76
発行部数6
DOI
出版物ステータスPublished - 2012 6

    フィンガープリント

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

これを引用