Naslov
Glass Forming Ability and Thermodynamic Properties of NiZr and CuHfTi Metallic Glasses

Autori
Salčinović Fetić, Amra ; Starešinić, Damir ; Remenyi, Georgy ; Babić, Emil ; Biljaković, Katica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / Đekić, Maja - Sarajevo : Društvo fizičara u Federaciji Bosne i Hercegovine, 2018, 38-38

ISBN
978-9958-0393-1-7

Skup
Physics Conference in Bosnia and Herzegovina (PHYCONBA)

Mjesto i datum
Sarajevo, Bosna i Hercegovina, 25.10.2018. - 26.10.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
metalna stakla, sposobnost ostakljivanja
(Metallic Glasses, Glass Forming Ability)

Sažetak
We have investigated correlation between thermodynamic parameters given by low- temperature heat capacity (Cp) measurements and glass forming ability (GFA) of NiZr and CuHfTi metallic glasses. Cp of metallic glasses at sufficiently low temperature deviates from the Debye T3 law with a very well known anomaly named Boson peak (BP) which can be observed as a wide peak in Cp/T3(K) approximately at 10 K. Cp measurements were conducted in wide temperature range from 1.8 K to 300 K for as cast and relaxed Ni23Zr77 and Cu55Hf45-xTix (x=0, 5, ... and 45) samples. BP, given as subtraction of the measured Cp and sum of the Debye phonon and electronic contributions, surprisingly in NiZr sample having a low GFA was not detected [1]. Low temperature phonon and electronic contributions to Cp of CuHfTi system depend monotonically on Ti concentration (x), same as reported before [2], but BP has pronounced maximum for Ti concentrations with enhanced GFA. Finally, we can conclude that GFA can be related with low temperature properties of alloys and the strength of BP could be a measure of GFA for metallic glasses produced under the same conditions [3]. [1] A. Salčinović Fetić et al., Phys. Rev. B 96, 064201 (2017) [2] G.Remenyi, et al., Appl. Phys. Lett. 104, 171906 (2014) [3] D. Starešinić, A. Salčinović Fetić, G. Remenyi, I. A. Figueroa, E. Babić, K. Biljaković, Can intensity of BP be a measure of GFA?, under preparation

Izvorni jezik
Engleski

POVEZANOST RADA