Boson peak in the specific heat of metallic glasses (CROSBI ID 680202)
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Podaci o odgovornosti
Starešinić, Damir ; Salčinović Fetić, Amra ; Remenyi, Georgyi ; Biljaković, Katica ; Dominko, Damir ; Sulejmanovć, Suada ; Figueroa, I.A. ; Babić, Emil
engleski
Boson peak in the specific heat of metallic glasses
We have studied low temperature specific heat (LTSH) in different glass-forming metallic alloys: binary marginal glasses ZrNi [1], bulk metallic glasses CuHfTi [2] and high entropy metallic glasses TiZrNbCuNi(Co) [3]. The results concerning so-called boson peak (BP) contribution to the density of vibrational states in excess to the Debye contribution are quite varied between these alloys. While Zr77Ni23 does not show BP, in Cu55Hf45- xTix its position and amplitude vary monotonously with the Ti content, Fig. 1. In TiZrNbCuNi(Co) alloys with multiple principle elements, the position of BP scales roughly with the Debye temperature, while its amplitude shows more complex behaviour. We discuss these results in respect of the intrinsic differences between these alloys [4] and in the view of different theories of BP, see e.g. [5, 6]. [1] A. Salčinović Fetić et al., Phys. Rev. B 96 (2017) 064201. [2] G. Remenyi et al., Appl. Phys. Lett. 104 (2014) 171906. [3] E. Babić et al., J. Mater. Res. 33 (2018) 3170. [4] W. H. wang, JOM 66 (2014) 2076. [5] T. Brink et al., Phys. Rev. B 94 (2016) 224203. [6] M. Baggioli and A. Zaccone, Phys. Rev. B 122 (2019) 145501.
Metalna stakla, Toplinski kapacitet, Bozonski vršak
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Podaci o prilogu
109-109.
2019.
objavljeno
Podaci o matičnoj publikaciji
Book of Abstracts
Biliškov, Nikola
Zagreb: Institut Ruđer Bošković
978-953-7941-32-1
Podaci o skupu
Solid State Science and Research Meeting
poster
27.06.2019-29.06.2019
Zagreb, Hrvatska