Some novel results of physical aging studies in glassy selenium

•Observation of nano-structuring in aged samples after 10 years of natural storage.•Signature of aging-induced self-organization in the old sample of glassy Se.•Results are important to increasing the durability of devices made Se rich glasses.•Aging phenomenon reflects the straightening/shrinkage e...

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Bibliographic Details
Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2020-09, Vol.259, p.114598, Article 114598
Main Authors: Pal, Shiv Kumar, Mehta, N., Mikla, V.I., Horvat, A.A., Minkovich, V.V.
Format: Article
Language:English
Subjects:
Aging
Aging (artificial)
Aging (natural)
Crystallization
Devitrification
Fragility
Glass transition temperature
Materials science
Mechanical properties
Micro-hardness
Micro-structure
Microhardness
Nano-glass
Physical aging
Quenching
Raman spectroscopy
Selenium
Thermal stability
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Summary:•Observation of nano-structuring in aged samples after 10 years of natural storage.•Signature of aging-induced self-organization in the old sample of glassy Se.•Results are important to increasing the durability of devices made Se rich glasses.•Aging phenomenon reflects the straightening/shrinkage effects in Selenium glass. Physical aging (PhA) of disorder materials is still an important problem in areas of physics, chemistry and materials science for the study even nowadays. This work reports the results of some novel observations during the devitrification of the aged and as-quenched glassy selenium. Investigation of physical aging effect induced by natural storage up to 10 years aged Selenium glass has been carried out using the state of art experimental techniques (DSC, XRD, SEM, TEM and Raman spectroscopy). Further, the thermal stability, micro-hardness, density, fragility index and compactness of the aged and as-quenched glassy selenium have been determined to see the effect of aging on the glassy Se. The results show that there are significant changes in themechanical behavior of g-Se due to physical aging.
ISSN:0921-5107
1873-4944
DOI:10.1016/j.mseb.2020.114598