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Phase transformation and crystallization kinetics of Te67.5Ga2.5As30 amorphous alloy

Research Authors
Mostafa I.Abd-Elrahman , MohmmedM.Hafiz
Research Abstract

The amorphoustocrystallinetransformationinTe67.5Ga2.5As30 occurs undernon-isothermalcondi-
tions. Thecrystallizationparametersofthisamorphousmaterialareestimatedusingdifferential
scanningcalorimetery(DSC).Theactivationenergyofcrystallization(Ec) andthefrequencyfactor(K0)
are calculatedtobe113.1671.5 kJ/moland1.041010731.70 s1, respectively.Thecrystallization
mechanismisfoundtobeone-dimensionalgrowthmechanismasindicatedfromtheestimatedAvrami
exponentvalue.X-rayinvestigationsconfirmtheamorphousphaseandcrystallinestatefortheas-
preparedandannealedsamples,respectively.Thecrystallizedgrainsizesofnanoscalearecalculated
from theXRDpeaks.

Research Department
Research Journal
Physica B
Research Rank
1
Research Vol
Vol.410
Research Year
2013
Research Pages
PP.53–56