Naslov
Boson peak in the specific heat of metallic glasses

Autori
Starešinić, Damir ; Salčinović Fetić, Amra ; Remenyi, Georgyi ; Biljaković, Katica ; Dominko, Damir ; Sulejmanovć, Suada ; Figueroa, I.A. ; Babić, Emil

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

Izvornik
Book of Abstracts / Biliškov, Nikola - Zagreb : Institut Ruđer Bošković, 2019, 109-109

ISBN
978-953-7941-32-1

Skup
Solid State Science and Research Meeting

Mjesto i datum
Zagreb, Hrvatska, 27.06.2019. - 29.06.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Recenziran

Ključne riječi
Metallic glasses, Heat capacity, Boson peak
(Metalna stakla, Toplinski kapacitet, Bozonski vršak)

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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