Glass-liquid transition in a less-stable metallic glass

Tetsu Ichitsubo, Eiichiro Matsubara, Hiroshi Numakura, Katsushi Tanaka, Nobuyuki Nishiyama, Ryuichi Tarumi

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

A stable metallic glass, SMG, is often viewed as an amorphous alloy exhibiting a reversible glass ↔ liquid transition. Here we show experimentally that even in a less-stable metallic glass, LMG, which is prepared only by rapid melt quenching and promptly crystallized without glass transition at the ordinary heating rate, sufficiently rapid heating exposes the glass→liquid transition by suppressing crystallization. The experimental glass transition Tg and crystallization Tx temperatures were plotted as a function of heating rate β, for Pd42.5 Ni7.5 Cu30 P20 of SMG and for Zr70 Ni30 of LMG. Two extrapolated curves, Tg -log β and Tx -log β, intersect at a quite small β, e.g., ∼ 10-4°C/min, for SMG, whereas their intersection occurs at a large β, e.g., ∼10°C/min, for LMG. Such a large β that is comparable to conventional heating rates makes it difficult to observe the reversible glass transition in LMG, and reflects low thermal stability of the glassy state.

Original languageEnglish
Article number052201
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number5
DOIs
Publication statusPublished - 2005 Aug 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Glass-liquid transition in a less-stable metallic glass'. Together they form a unique fingerprint.

Cite this