Peculiarities in the plasma resonance of binary amorphous Al–TM alloys

Stiehler, M.; Giegengack, U.; Barzola‐Quiquia, J.; Rauchhaupt, J.; Schulze, Steffen; Häußler, P.

doi:10.1016/j.jpcs.2006.12.020

Cited by 11 publications

(11 citation statements)

References 15 publications

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“…While the former value is to be expected, the latter cannot be inferred from the periodic table [11]. Further, Z TM is virtually independent of the particular TM in the alloy [11].…”

Section: Introductionmentioning

confidence: 82%

“…For so-called "simple" a-alloys (where no d-states are present at the Fermi energy E F ) it was indeed found that it is possible to predict ω P quite accurately by taking into accountZ calculated from the "usual" valences from the periodic table [11]. However, if dstates at E F occur, like in alloys with transition metals (TM), even in a-alloys this simple approach is no longer viable.…”

Section: Introductionmentioning

confidence: 99%

“…However, if dstates at E F occur, like in alloys with transition metals (TM), even in a-alloys this simple approach is no longer viable. Especially, for the binary a-Al-TM alloys with TM = Ca, Ti, V, Cr, Mn, Fe, Co, Ni it was shown that the dominant feature seen by electron energy loss spectroscopy (EELS), if indeed interpreted as caused by the excitation of volume plasmons, can be described by the valences Z Al = 3 and Z TM ≈ 5 [11]. While the former value is to be expected, the latter cannot be inferred from the periodic table [11].…”

Section: Introductionmentioning

confidence: 99%

“…Especially, for the binary a-Al-TM alloys with TM = Ca, Ti, V, Cr, Mn, Fe, Co, Ni it was shown that the dominant feature seen by electron energy loss spectroscopy (EELS), if indeed interpreted as caused by the excitation of volume plasmons, can be described by the valences Z Al = 3 and Z TM ≈ 5 [11]. While the former value is to be expected, the latter cannot be inferred from the periodic table [11]. Further, Z TM is virtually independent of the particular TM in the alloy [11].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations

Stiehler

Kaltenborn

Gillani

et al. 2015

Journal of Electron Spectroscopy and Related Phenomena

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“…While the former value is to be expected, the latter cannot be inferred from the periodic table [11]. Further, Z TM is virtually independent of the particular TM in the alloy [11].…”

Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations

Stiehler

Kaltenborn

Gillani

et al. 2015

Journal of Electron Spectroscopy and Related Phenomena

Self Cite

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“…This requirement is fulfilled for AlNi alloys. The Debye temperatures are of the order 450 K. The electron densities have been measured by Stiehler et al [31,32] and the velocities of sound have been derived directly from MD simulations of a shock wave running through the samples. Finally, the optical properties of the materials are needed.…”

Section: Electronic and Optical Parametersmentioning

confidence: 99%

Laser ablation of Al–Ni alloys and multilayers

et al. 2016

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Laser ablation of Al-Ni alloys and multilayers has been studied by molecular dynamics simulations. The method was combined with a two-temperature model to describe the interaction between the laser beam, the electrons, and the atoms. As a first step, electronic parameters for the alloys had to be found and the model developed originally for pure metals had to be generalized to multilayers. The modifications were verified by computing melting depths and ablation thresholds for pure Al and Ni.Here known data could be reproduced. The improved model was applied to the alloys Al 3 Ni, AlNi and AlNi 3 . While melting depths and ablation thresholds for AlNi behave unspectacular, sharp drops at high fluences are observed for Al 3 Ni and AlNi 3 . In both cases, the reason is a change in ablation mechanism from phase explosion to vaporization. Furthermore, a phase transition occurs in Al 3 Ni. Finally, Al layers of various thicknesses on a Ni substrate have been simulated. Above threshold, 8 nm Al films are ablated as a whole while 24 nm Al films are only partially removed. Below threshold, alloying with a mixture gradient has been observed in the thin layer system.

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A Cluster–Resonance Criterion for Al‐TM Quasicrystal Compositions

Chen

Qiang

Wang

et al. 2011

Israel Journal of Chemistry

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Compositions of binary Al-TM (TM = Cr to Ni) quasicrystals are interpreted with a unified cluster formula [icosahedron](glue) 1 using the newly developed cluster-resonance model and the e/a formalism. The icosahedra are chosen from the corresponding approximants by considering large radial atomic density, high degree of isolation, and narrow distribution of the shell atoms. Icosahedral quasicrystals are expressed by an icosahedron plus one averaged icosahedron atom as the glue atom [icosahedron](icosahedron/13) 1 , characterized by e/a~1.83-1.85, while decagonal quasicrystals are expressed by an icosahedron plus one TM atom, with e/a~1.71-1.78. The total electrons accommodated in unit cluster formulas of different Al-TM quasicrystals have the same value approaching 24, which implies that the cluster formulas are both chemical and electronic structural units.

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Peculiarities in the plasma resonance of binary amorphous Al–TM alloys

Cited by 11 publications

References 15 publications

Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations

Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations

Laser ablation of Al–Ni alloys and multilayers

A Cluster–Resonance Criterion for Al‐TM Quasicrystal Compositions

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