Al p Conduction States in Quasi-Crystalline Al-Cu-Fe Alloy and Related Compounds

Abstract

PACS. 61.40 -Amorphous and polymeric materials. PACS. 71.20 -Electronic density of states determinations (inc. energy states of liquid PACS. 78.70D -X-ray absorption and absorption edges. semiconductors).

Atomic structure, electronic structure and thermal stability of amorphous Al x Zr 1−x (0.26 ≤ x ≤ 0.75)

“…Section 2.3), the VB spectra were normalized with respect to their intensity maxima. The VB spectra of pure Al and pure Zr closely reflect the density of electron states in the valence band of each metal up to the Fermi level at E B = 0 [63] and are in good agreement with those reported in the literature [64,65]. Clearly, the VB spectra of the am-Al x Zr 1 − x alloys differ from those of pure Al metal and pure Zr metal: distinct peak maxima emerge in the valence band at around 6 eV and 9-10 eV.…”

Electronic transport properties of quasicrystals

“…This point has been experimentally confirmed by X-ray emission or absorption spectroscopy for icosahedral phases 59 . The specific heat measures give also a weak TDoS at the Fermi level, of order ∼ 1/3 of free electrons for icosahedral phases of AlCuF e, AlLiCu 59 (see fig.…”

Conditions on the occurrence of magnetic moments in quasicrystals and related phases

“…Therefore, the understanding of magnetic moment requires to analyze carefully the local DOS. In the Al-Mn alloys, because of the strong sp-d hybridization [5,6,7,8], the local DOS depends widely on the atomic structure: the local environment (number and chemical nature of the neighbors, local symmetry) must be important, but it depends also on the medium range order because the sp states are delocalized. This last effect is the most important for Mn atoms as respect with other TM atoms (Cr, Fe, Co, Ni), because the d band of Mn is half filled.…”