TY  - JOUR
AU  - Nejadsattari, F.
AU  - Stadnik, Z. M.
AU  - Przewoznik, J.
AU  - Grushko, Benjamin
TI  - Mössbauer spectroscopy, magnetic and ab-initio study of the approximant Al$_{76}$Ni$_{9}$Fe$_{15}$ to a decagonal Al-Ni-Fe quaiscrystal
JO  - Journal of alloys and compounds
VL  - 662
SN  - 0925-8388
CY  - Lausanne
PB  - Elsevier
M1  - FZJ-2017-01364
SP  - 612 - 620
PY  - 2016
AB  - The structural, magnetic, and Mössbauer spectral properties of the approximant Al76Ni9Fe15 to a decagonal Al–Ni–Fe quasicrystal, complemented by ab-initio electronic structure and the hyperfine-interaction parameters calculations, are reported. The approximant studied crystallizes in the monoclinic space group C2/m with the lattice parameters a = 15.3898(3) Å, b = 8.0840(2) Å, c = 12.4169(2) Å, and β = 107.870(2)∘. The existence of a pseudogap in the calculated electronic density of states slightly above the Fermi level suggests electronic stabilization according to the Hume-Rothery-type mechanism. High metallicity of Al76Ni9Fe15 is predicted. Both the Mössbauer spectra and magnetic susceptibility data indicate that Al76Ni9Fe15 is a paramagnet down to 2.0 K. The presence of the distribution of the electric quadrupole splitting in the Mössbauer spectra measured in the temperature range 4.5–296.1 K is observed. The increase of the average quadrupole splitting with decreasing temperature is well described by a T3/2 power-law relation. The Debye temperature of Al76Ni9Fe15 is found to be 431(3) K.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000368336200084
DO  - DOI:10.1016/j.jallcom.2015.12.115
UR  - https://juser.fz-juelich.de/record/827166
ER  -