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Title: Atomistic Model of Physical Ageing in Se-rich As-Se Glasses

Journal Article · · Philosophical Magazine B

Thermal, optical, X-ray excited and magnetic methods were used to develop a microstructural model of physical ageing in Se-rich glasses. The glass composition As10Se90, possessing a typical cross-linked chain structure, was chosen as a model object for the investigations. The effect of physical ageing in this glass was revealed by differential scanning calorimetry, whereas the corresponding changes in its atomic arrangement were studied by extended X-ray absorption fine structure, Raman and solid-state 77Se nuclear magnetic resonance spectroscopy. Straightening-shrinkage processes are shown to be responsible for the physical ageing in this Se-rich As-Se glass.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Organization:
Doe - Office Of Science
DOE Contract Number:
DE-AC02-98CH10886
OSTI ID:
929929
Report Number(s):
BNL-80523-2008-JA; TRN: US200822%%939
Journal Information:
Philosophical Magazine B, Vol. 87, Issue 28; ISSN 1478-6435
Country of Publication:
United States
Language:
English

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