Published April 2007 | Version v1
Journal article Metadata-only

Dynamic observation study of crystallization process in Sb-based phase-change materials

Creators

  • 1. NHK, Science and Technical Research Laboratories, Tokyo (Japan)
  • 2. Tokyo Univ. of Agriculture and Technology, Electronic and Information Engineering, Koganei, Tokyo (JP)
  • 3. Tokyo Denki Univ., Materials Science and Engineering, Tokyo (JP)

Description

A streak-camera system for the observation of high-speed crystallization processes induced by laser irradiation in phase-change (PC) recording materials has been developed. A distinct difference in the time-sequential development of the crystallized region was observed in two different types of PC materials, i.e., Sb78Te22 (eutectic composition) and Ge2Sb2Te5 (pseudobinary alloy) films. Taking into account a thermal simulation analysis, the observed difference is interpreted in terms of the different crystallization process. It is concluded that Sb78Te22, which is a growth-dominant film, is suitable for high-speed high-density recording. (author)

Additional details

Publishing Information

Journal Title
Japanese Journal of Applied Physics. Part 2, Letters and Express Letters
Journal Volume
46
Journal Issue
12-16
Journal Page Range
p. L385-L387
ISSN
0021-4922

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
39009832
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANTIMONY TELLURIDES; CALORIMETRY; CRYSTAL GROWTH; CRYSTALLIZATION; EUTECTICS; FILMS; GERMANIUM COMPOUNDS; LASER RADIATION; LAYERS; NUCLEATION; PHASE CHANGE MATERIALS; RECORDING SYSTEMS; STREAK CAMERAS; THERMAL ANALYSIS; X-RAY DIFFRACTION
Descriptors DEC
ANTIMONY COMPOUNDS; CAMERAS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; ELECTROMAGNETIC RADIATION; MATERIALS; PHASE TRANSFORMATIONS; RADIATIONS; SCATTERING; TELLURIDES; TELLURIUM COMPOUNDS

Optional Information

Notes
8 refs., 4 figs., 1 tab.