Observation of long-range compositional fluctuations in glasses: Implications for atomic and electronic structure

Nan Jiang; Jianrong Qiu; C. J. Humphreys; John Spence

doi:10.1016/j.micron.2007.10.014

Observation of long-range compositional fluctuations in glasses: Implications for atomic and electronic structure

Nan Jiang, Jianrong Qiu, C. J. Humphreys, John Spence

Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Experimental evidence for long-range compositional fluctuations in glasses is given. The implications for electronic structure and stoichiometry-induced structural variations are analyzed. These fluctuations were discovered by examining the spatial dependence of inner shell near-edge absorption spectra obtained using a 50 nm diameter probe. This spectroscopy is sensitive to both angular and distance correlations in bonding. Comparisons with spectra from compositionally equivalent crystals, and multiple-scattering calculations which include core-hole effects are used to analyze the data.

Original language	English (US)
Pages (from-to)	698-702
Number of pages	5
Journal	Micron
Volume	39
Issue number	6
DOIs	https://doi.org/10.1016/j.micron.2007.10.014
State	Published - Aug 2008

Keywords

EELS
Glass
Long-range order

ASJC Scopus subject areas

Structural Biology
General Materials Science
General Physics and Astronomy
Cell Biology

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10.1016/j.micron.2007.10.014

Cite this

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title = "Observation of long-range compositional fluctuations in glasses: Implications for atomic and electronic structure",

abstract = "Experimental evidence for long-range compositional fluctuations in glasses is given. The implications for electronic structure and stoichiometry-induced structural variations are analyzed. These fluctuations were discovered by examining the spatial dependence of inner shell near-edge absorption spectra obtained using a 50 nm diameter probe. This spectroscopy is sensitive to both angular and distance correlations in bonding. Comparisons with spectra from compositionally equivalent crystals, and multiple-scattering calculations which include core-hole effects are used to analyze the data.",

keywords = "EELS, Glass, Long-range order",

author = "Nan Jiang and Jianrong Qiu and Humphreys, {C. J.} and John Spence",

note = "Funding Information: This work is supported by NSF award DMR0603993. The use of the facilities within the LeRoy Eyring Center for Solid State Science at ASU is also acknowledged. The work at Zhejiang University (J.Q.) was supported by NNSF of China (Grant No. 50672087) and NBRP of China (2006CB80600b).",

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doi = "10.1016/j.micron.2007.10.014",

language = "English (US)",

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journal = "Micron",

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T1 - Observation of long-range compositional fluctuations in glasses

T2 - Implications for atomic and electronic structure

AU - Jiang, Nan

AU - Qiu, Jianrong

AU - Humphreys, C. J.

AU - Spence, John

N1 - Funding Information: This work is supported by NSF award DMR0603993. The use of the facilities within the LeRoy Eyring Center for Solid State Science at ASU is also acknowledged. The work at Zhejiang University (J.Q.) was supported by NNSF of China (Grant No. 50672087) and NBRP of China (2006CB80600b).

PY - 2008/8

Y1 - 2008/8

N2 - Experimental evidence for long-range compositional fluctuations in glasses is given. The implications for electronic structure and stoichiometry-induced structural variations are analyzed. These fluctuations were discovered by examining the spatial dependence of inner shell near-edge absorption spectra obtained using a 50 nm diameter probe. This spectroscopy is sensitive to both angular and distance correlations in bonding. Comparisons with spectra from compositionally equivalent crystals, and multiple-scattering calculations which include core-hole effects are used to analyze the data.

AB - Experimental evidence for long-range compositional fluctuations in glasses is given. The implications for electronic structure and stoichiometry-induced structural variations are analyzed. These fluctuations were discovered by examining the spatial dependence of inner shell near-edge absorption spectra obtained using a 50 nm diameter probe. This spectroscopy is sensitive to both angular and distance correlations in bonding. Comparisons with spectra from compositionally equivalent crystals, and multiple-scattering calculations which include core-hole effects are used to analyze the data.

KW - EELS

KW - Glass

KW - Long-range order

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Observation of long-range compositional fluctuations in glasses: Implications for atomic and electronic structure

Abstract

Keywords

ASJC Scopus subject areas

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