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Interface bonding o...
Interface bonding of Zr1−xAlxN nanocomposites investigated by x-ray spectroscopies and first principles calculations
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- Magnuson, Martin, 1965- (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Olovsson, Weine, 1975- (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten
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- Ghafoor, Naureen, 1975- (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Odén, Magnus, 1965- (författare)
- Linköpings universitet,Nanostrukturerade material,Tekniska fakulteten
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- Hultman, Lars, Professor, 1960- (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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(creator_code:org_t)
- College Park, MD, United States : American Physical Society, 2020
- 2020
- Engelska.
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Ingår i: Physical Review Research. - College Park, MD, United States : American Physical Society. - 2643-1564. ; 2:1
- Relaterad länk:
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https://doi.org/10.1...
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The electronic structure, chemical bonding, and interface component in ZrN-AlN nanocomposites formed byphase separation during thin film deposition of metastable Zr1−xAlxN (x = 0.0, 0.12, 0.26, 0.40) are investigatedby resonant inelastic x-ray scattering, x-ray emission, and x-ray absorption spectroscopy and compared to firstprinciples calculations including transitions between orbital angular momentum final states. The experimentalspectra are compared with different interface-slab model systems using first principles all-electron full-potentialcalculations where the core states are treated fully relativistically. As shown in this work, the bulk sensitivity andelement selectivity of x-ray spectroscopy enables one to probe the symmetry and orbital directions at interfacesbetween cubic and hexagonal crystals. We show how the electronic structure develops from local octahedralbond symmetry of cubic ZrN that distorts for increasing Al content into more complex bonding. This results inthree different kinds of bonding originating from semicoherent interfaces with segregated ZrN and lamellar AlNnanocrystalline precipitates. An increasing chemical shift and charge transfer between the elements takes placewith increasing Al content and affects the bond strength and increases resistivity.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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