Relationships between Electronic Structure and Stability of Metallic Glasses.
Abstract
Amorphous MgZn alloys have been obtained in the form of thin films by co-evaporation under ultra-high vacuum on cold sapphire substrates (= approx. 10K), for Zn concentrations between 25 and 35 at.%. These films crystallize at about 350K. Their d.c. electrical resistivity and their optical properties between 0.6 and 4 eV have been investigated in situ. The resistivity versus temperature behaviour is roughly similar to that reported for quenched bulk alloys but the resistivity values are significantly larger. The complex dielectric constant follows the free-electron Drude model at low energies up to 1.8 eV. The optical free electron parameters are discussed and compared to those obtained on other free-electron-like amorphous alloys. Special attention is paid to the average effective number of conduction electrons per atom, which is found to be smaller than expected. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1984
- Accession Number
- ADA145506
Entities
People
- F. Abeles
- M. L. Theye
- V. Nguyen Van
Organizations
- Pierre and Marie Curie University