Glass Forming Ability and Thermodynamic Properties of NiZr and CuHfTi Metallic Glasses (CROSBI ID 667804)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa
Podaci o odgovornosti
Salčinović Fetić, Amra ; Starešinić, Damir ; Remenyi, Georgy ; Babić, Emil ; Biljaković, Katica
engleski
Glass Forming Ability and Thermodynamic Properties of NiZr and CuHfTi Metallic Glasses
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
Metallic Glasses, Glass Forming Ability
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Podaci o prilogu
38-38.
2018.
objavljeno
Podaci o matičnoj publikaciji
Book of Abstracts
Đekić, Maja
Sarajevo: Društvo fizičara u Federaciji Bosne i Hercegovine
978-9958-0393-1-7
Podaci o skupu
Physics Conference in Bosnia and Herzegovina (PHYCONBA)
predavanje
25.10.2018-26.10.2018
Sarajevo, Bosna i Hercegovina