Electron energy loss spectroscopy of ion irradiated Ni-Al alloys

1 July 1984

journal article
Published by AIP Publishing in Journal of Applied Physics

Vol. 56 (1) , 168-176
https://doi.org/10.1063/1.333748

Abstract

Ion beam modifications to thin-film, polycrystalline Ni-Al alloys have been investigated using high resolution [0.1 eV full width at half maximum (FWHM)] transmission electron energy loss spectroscopy (EELS). The ion-induced modification of Ni3Al, NiAl, Ni2Al3, and NiAl3, as measured by EELS, is compared to concurrent electron microscope diffraction analyses. The EELS core level spectra corroborate the NiAl3 to amorphous phase transition observed by diffraction, while the EELS valence spectra provide a signature for the Ni2Al3 to NiAl phase transformation. These results reflect the changes in the electronic states caused by changes in the crystal structure. In addition, perturbations to the electronic states are measured even when no change appears in the diffraction pattern (irradiated NiAl). Thus, high-resolution EELS is shown to be a sensitive analytical technique for studying ion irradiated materials.

This publication has 11 references indexed in Scilit:

Study of the $K$ edges of $3 d$ transition metals in pure and oxide form by x-ray-absorption spectroscopy
Physical Review B, 1983
Core excitons in corundum
Solid State Communications, 1982
Microalloying by ion-beam mixing
Nuclear Instruments and Methods, 1981
Continuous series of metastable Ag-Cu solid solutions formed by ion-beam mixing
Applied Physics Letters, 1980
Electronic structure and optical constants of Ni by electron inelastic scattering
Physical Review B, 1979
Inelastic electron scattering spectrometer
Review of Scientific Instruments, 1975
Measurement of surface-plasmon dispersion in oxidized aluminum films
Physical Review B, 1975
Photoabsorption of alloys of Al with transition metals V, Fe, Ni and Cu and Pr near the AlL2,3-edge
Solid State Communications, 1974
Simple Calculation of $L_{II, III}$ Absorption Spectra of Na, Al, and Si
Physical Review Letters, 1974
An X-ray analysis of the nickel-aluminium system
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1937