Nano-scale structural inhomogeneities of CuI-Cu2MoO4 superionic conducting glass observed by high resolution transmission electron microscopy

Takao Tsurui, Junichi Kawamura, Kenji Suzuki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Nano-meter sized structural inhomogeneities of (CuI)0.52-(Cu2MoO4)0.48 superionic conducting glass were investigated by high resolution transmission electron microscopy. The as-quenched sample of CuI-Cu2MoO4 is a homogeneous glass, in which the CuI component is finely and uniformly dispersed among the oxyanions of Cu2MoO4 glassy matrix. A two-step crystallization, starting at 440 and 495 K, was observed in the glass. After the first step crystallization, precipitating nano-crystalline cubic CuI 2-3 nm in diameter, the electrical conductivity increases by about 50%. On the other hand, the electrical conductivity decreases with the second crystallization event forming crystalline phases of CuI, Cu2O and others 20-30 nm in diameter.

Original languageEnglish
Pages (from-to)302-307
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume353
Issue number3
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Fast ion conduction
  • Oxide glasses
  • TEM/STEM

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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