講演会 「Magnetic field effect at high temperature during solidification and annealing of Co-X near eutectic alloys」

化学コロキウム(講演会)

Magnetic field effect at high temperature during solidification and annealing of Co-X near eutectic alloys

Prof. Eric Beaugnon (Universite Joseph Fourier and CNRS-LNCMI)

日時 2012年11月9日(金) 16:00-17:00
場所 信州大学理学部リフレッシュラウンジ(松本キャンパス理学部A棟2F)松本市旭3-1-1
(変更されることがあります)
主催 信州大学理学部化学科
参加 自由

新規な性質を発現する物質を強磁場を利用してどのように生み出すかを,最新の成果を交えて紹介していただく予定です。

Solid state annealing and solidification after undercooling of Co-X eutectic alloys is studied under high magnetic field. As the cobalt phase has a high Curie temperature, solidification temperature or annealing temperature are below or close to the ferromagnetic transition, leading to strong magnetic interactions. In the case of solid state annealing, a preferential growth along the field direction is observed. A model based on local magnetic forces is discussed. In the case of solidification, effect of the magnetic field on the recalescence temperature is observed, depending on the exact cobalt amount of the near-eutectic alloy.