Nanoscale heterogeneous structures in GeO2-GeS2 glasses

Nobuaki Terakado, Keiji Tanaka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Atomic bonding structures in xGeO2-(100 - x)GeS2 glasses have been studied through structural and chemical experiments. Atomic force microscope images in alkali-etched samples with x = 80 mol % show nano-scale dips, which are ascribable to isolated GeS2 clusters. Transmission electron microscope images and small angle X-ray scattering patterns suggest that the glass with x ≈ 50 has pronounced heterogeneous structures in nanoscales. Composition dependence of an etching rate exhibits a characteristic change at x = 60, which can be interpreted as a percolation threshold of tetrahedral GeS4 units. These results support a nanostructure model for the oxy-chalcogenide glass.

Original languageEnglish
Pages (from-to)7972-7974
Number of pages3
JournalJapanese journal of applied physics
Volume47
Issue number10 PART 1
DOIs
Publication statusPublished - 2008 Oct 1
Externally publishedYes

Keywords

  • AFM
  • Chalcogenide
  • GeO
  • GeS
  • Nanostructure
  • Oxide
  • Oxy-chalcogenide
  • SAXS
  • TEM

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Nanoscale heterogeneous structures in GeO<sub>2</sub>-GeS<sub>2</sub> glasses'. Together they form a unique fingerprint.

Cite this