1980
DOI: 10.1002/pssa.2210620138
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Thermal properties and crystallization processes in semiconducting AlAsTe glasses

Abstract: Glasses in the Al–As–Te system are prepared and characterized. DSC and X‐ray studies of the crystallization are also performed. The kinetic parameters (activation energy and Avrami index) are obtained in non‐isothermal conditions by a method previously described. Diffusion mechanisms are responsible for the crystallization and an activation energy of about 1.5 eV is found for the diffusion of Te. The Al content is shown to increase the stability of the glasses, while high Te content favours phase separation an… Show more

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Cited by 15 publications
(7 citation statements)
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“…Interestingly, the crystallization reaction is absent for x ≥ 15. Similar kind observation has been reported earlier on Al-As-Te glasses [34,35]. Glass with x = 10 has a very weak crystallization peak.…”
Section: Resultssupporting
confidence: 81%
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“…Interestingly, the crystallization reaction is absent for x ≥ 15. Similar kind observation has been reported earlier on Al-As-Te glasses [34,35]. Glass with x = 10 has a very weak crystallization peak.…”
Section: Resultssupporting
confidence: 81%
“…Another interesting observation is that in many of the metal doped chalcogenide glasses the crystalline phases involving metal atoms are absent. For example, in thermally crystallized Al m As n Te 100-m-n , Ge 15 Te 85-s Cu s , Ge 20 Te 80-t Sn t , glasses, there is no Al, Sn or Cu involved crystalline phases are observed [34,[38][39][40]. In the binary Al u Te 100-u (17 ≤ u ≤ 30), the formation of Φ(Al\ \Te) crystalline phase has been observed [41].…”
Section: Resultsmentioning
confidence: 91%
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“…2), which can easily be characterized by the temperature of the maximum, Tin. The shifts in the characteristic temperatures Tg and T,, when the heating rate is varied are habitually used empirically to obtain the "activation energy" corresponding to the glass transition or sub-Tg processes [14,15]. Such a procedure however, is, seldom justified in the frame of any kinetic model for processes of structural rearrangements in glasses near To.…”
mentioning
confidence: 98%