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

Takao Tsurui; Junichi Kawamura; Kenji Suzuki

doi:10.1016/j.jnoncrysol.2006.11.008

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

Takao Tsurui, Junichi Kawamura, Kenji Suzuki

University Research Administration (URA) Center

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	302-307
Number of pages	6
Journal	Journal of Non-Crystalline Solids
Volume	353
Issue number	3
DOIs	https://doi.org/10.1016/j.jnoncrysol.2006.11.008
Publication status	Published - 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

Access to Document

10.1016/j.jnoncrysol.2006.11.008

Cite this

@article{42eb1d20d6074f58bcbe96ada782ea1e,

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

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.",

keywords = "Fast ion conduction, Oxide glasses, TEM/STEM",

author = "Takao Tsurui and Junichi Kawamura and Kenji Suzuki",

note = "Funding Information: The authors thank Prof. K. Hiraga (emeritus professor of Tohoku University) for his useful comments on TEM observations. This work is supported by {\textquoteleft}Nanotechnology Support Project{\textquoteright} of Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. ",

year = "2007",

month = mar,

day = "1",

doi = "10.1016/j.jnoncrysol.2006.11.008",

language = "English",

volume = "353",

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journal = "Journal of Non-Crystalline Solids",

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TY - JOUR

T1 - Nano-scale structural inhomogeneities of CuI-Cu2MoO4 superionic conducting glass observed by high resolution transmission electron microscopy

AU - Tsurui, Takao

AU - Kawamura, Junichi

AU - Suzuki, Kenji

N1 - Funding Information: The authors thank Prof. K. Hiraga (emeritus professor of Tohoku University) for his useful comments on TEM observations. This work is supported by ‘Nanotechnology Support Project’ of Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - 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.

AB - 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.

KW - Fast ion conduction

KW - Oxide glasses

KW - TEM/STEM

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