Change of electronic properties on transition from high-entropy to Ni-rich (TiZrNbCu)1−xNix alloys (CROSBI ID 272911)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kuveždić, Marko ; Tafra, Emil ; Basletić, Mario ; Ristić, Ramir ; Pervan, Petar ; Mikšić Trontl, Vesna ; Figueroa, Ignacio A. ; Babić, Emil
engleski
Change of electronic properties on transition from high-entropy to Ni-rich (TiZrNbCu)1−xNix alloys
We present results of comprehensive study of electronic properties of (TiZrNbCu)1-xNix metallic glasses performed in broad composition range x encompassing both, high entropy (HE) range, and conventional Ni-base alloy concentration range, x ≥ 0.35. The electronic structure studied by photoemission spectroscopy and low temperature specific heat (LTSH) reveal a split-band structure of density of states inside valence band with d- electrons of Ti, Zr, Nb and also Ni present at Fermi level N(EF), whereas LTSH and magnetoresistivity results show that variation of N(EF) with x changes in Ni-base regime. The variation of superconducting transition temperatures with x closely follows that of N(EF). The electrical resistivities of all alloys are high and decrease with increasing temperature over most of explored temperature range, and their temperature dependence seems dominated by weak localization effects over a broad temperature range (10–300 K). The preliminary study of Hall effect shows positive Hall coefficient that decreases rapidly in Ni-base alloys.
Metallic glasses ; Superconductors ; Electronic band structure ; Electronic properties ; Photoemission spectroscopy
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
531
2020.
119865
7
objavljeno
0022-3093
1873-4812
10.1016/j.jnoncrysol.2019.119865