Enhancement of phase stability by manganese in Al60-xMn Cu40
| Autor: | Syed Sajid Ali Gillani, Peter Häussler |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Scattering chemistry.chemical_element 02 engineering and technology Manganese 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Molecular physics Electronic Optical and Magnetic Materials Amorphous solid Reciprocal lattice Wavelength chemistry Structural stability 0103 physical sciences Materials Chemistry Ceramics and Composites Thermal stability 0210 nano-technology Structure factor |
| Zdroj: | Journal of Non-Crystalline Solids. 481:361-367 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2017.11.011 |
| Popis: | We present emerging structural and transport properties of amorphous Al60-xMnxCu40. We observed, in all structural data, a dominant peak in the structure factor S(K) at scattering vector Kpe ≃ 2kF in reciprocal space, with 2kF the diameter of the Fermi sphere which is related to local spherical structural periodicity of nearest-neighbor shells at medium-range distances in real space. The characteristic atomic distances between nearest neighbor shells are determined by the Friedel wavelength, half of the Fermi wavelength. We discussed the structural features, as caused by an optimized global resonances between the electronic and the static atomic structure, with subsequent consequences on structural stabilization and electronic transport. The global resonances are self-organizing by the exchange of characteristic momentum together with energy, trigger density anomalies and hybridization effects. We show strong indications for a combined action of density anomaly and hybridization. Within the homogeneous amorphous phase, higher the Manganese content, stronger is the hybridization with higher structural stability. Under global resonances both the electronic transport properties and thermal stability data are strongly correlated with the structural determination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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