Photoinduced structural relaxation in chalcogenide glasses

Pierre Lucas; Anand Doraiswamy; Ellyn A. King

doi:10.1016/j.jnoncrysol.2003.09.008

Photoinduced structural relaxation in chalcogenide glasses

Pierre Lucas, Anand Doraiswamy, Ellyn A. King

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

59 Scopus citations

Abstract

Measurements of residual entropy were performed on irradiated chalcogenide glasses using a modulated differential scanning calorimeter. We show that glass from the Ge_xSe_1-x system can undergo extensive structural relaxation under sub-bandgap irradiation. This ability to relax is correlated with the strong/fragile character of the glass-forming system. Fragile glassformers experience larger relaxation as expected from the Kauzmann entropy plot. The temperature dependence of this photorelaxation process is also consistent with entropy relaxation. These measurements demonstrate that the glass configurational entropy decreases under irradiation. This can be regarded as a light activated aging process.

Original language	English (US)
Pages (from-to)	35-42
Number of pages	8
Journal	Journal of Non-Crystalline Solids
Volume	332
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnoncrysol.2003.09.008
State	Published - Dec 15 2003

ASJC Scopus subject areas

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

Access to Document

10.1016/j.jnoncrysol.2003.09.008

Cite this

@article{5d6067b188dc4b5fbb2edd22aeb069b4,

title = "Photoinduced structural relaxation in chalcogenide glasses",

abstract = "Measurements of residual entropy were performed on irradiated chalcogenide glasses using a modulated differential scanning calorimeter. We show that glass from the GexSe1-x system can undergo extensive structural relaxation under sub-bandgap irradiation. This ability to relax is correlated with the strong/fragile character of the glass-forming system. Fragile glassformers experience larger relaxation as expected from the Kauzmann entropy plot. The temperature dependence of this photorelaxation process is also consistent with entropy relaxation. These measurements demonstrate that the glass configurational entropy decreases under irradiation. This can be regarded as a light activated aging process.",

author = "Pierre Lucas and Anand Doraiswamy and King, {Ellyn A.}",

year = "2003",

month = dec,

day = "15",

doi = "10.1016/j.jnoncrysol.2003.09.008",

language = "English (US)",

volume = "332",

pages = "35--42",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Photoinduced structural relaxation in chalcogenide glasses

AU - Lucas, Pierre

AU - Doraiswamy, Anand

AU - King, Ellyn A.

PY - 2003/12/15

Y1 - 2003/12/15

N2 - Measurements of residual entropy were performed on irradiated chalcogenide glasses using a modulated differential scanning calorimeter. We show that glass from the GexSe1-x system can undergo extensive structural relaxation under sub-bandgap irradiation. This ability to relax is correlated with the strong/fragile character of the glass-forming system. Fragile glassformers experience larger relaxation as expected from the Kauzmann entropy plot. The temperature dependence of this photorelaxation process is also consistent with entropy relaxation. These measurements demonstrate that the glass configurational entropy decreases under irradiation. This can be regarded as a light activated aging process.

AB - Measurements of residual entropy were performed on irradiated chalcogenide glasses using a modulated differential scanning calorimeter. We show that glass from the GexSe1-x system can undergo extensive structural relaxation under sub-bandgap irradiation. This ability to relax is correlated with the strong/fragile character of the glass-forming system. Fragile glassformers experience larger relaxation as expected from the Kauzmann entropy plot. The temperature dependence of this photorelaxation process is also consistent with entropy relaxation. These measurements demonstrate that the glass configurational entropy decreases under irradiation. This can be regarded as a light activated aging process.

UR - http://www.scopus.com/inward/record.url?scp=0242551648&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242551648&partnerID=8YFLogxK

U2 - 10.1016/j.jnoncrysol.2003.09.008

DO - 10.1016/j.jnoncrysol.2003.09.008

M3 - Article

AN - SCOPUS:0242551648

SN - 0022-3093

VL - 332

SP - 35

EP - 42

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 1-3

ER -

Photoinduced structural relaxation in chalcogenide glasses

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this