Understanding the phase-change mechanism of rewritable optical media

Alexander V. Kolobov, Paul Fons, Anatoly I. Frenkel, Alexei L. Ankudinov, Junji Tominaga, Tomoya Uruga

Research output: Contribution to journalArticlepeer-review

1230 Citations (Scopus)


The phase-change mechanism of the rewritable optical media was studied. An amorphous as-deposited GST layer was crystallized by exposure to a laser beam of intensity sufficient to heat the material to a temperature slightly above the glass-transition temperature. It was observed that crystalline GeTe possessed a certain amount of vacancies on Ge sites. It was found that GST can be viewed as being built from well-defined rigid blocks of the composition Ge 2Sb2Te5. It was suggested that the mechanism of the structural phase transition provides potentially critical insight in the search for better performing materials.

Original languageEnglish
Pages (from-to)703-708
Number of pages6
JournalNature Materials
Issue number10
Publication statusPublished - 2004 Oct
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Understanding the phase-change mechanism of rewritable optical media'. Together they form a unique fingerprint.

Cite this