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Positron annihilation studies of the dynamics of the evolution of free volume in amorphous alloy Ni25Zr55Al20

✍ Scribed by K. Krištiaková; P. Švec; J. Krištiak; O. Šauša; P. Duhaj

Book ID
115990567
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
331 KB
Volume
192-193
Category
Article
ISSN
0022-3093

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Direct evidence of free-volume relaxatio
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✍ K. Krištiaková; J. Krištiak; P. Švec; O. Šauša; P. Duhaj 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 629 KB

The changes in positron annihilation lifetime in a thermally treated Ni,,Zr,,Al,, alloy were observed. The glass transition temperature T, lies around 700 K. Isothermal annealing was used to treat samples sequentially in the amorphous (at 640 K) and the undercooled liquid (at 740 K) states. This pro