Optical Properties of Amorphous Magnesium-Bismuth Alloys

Odeh, Ibrahim M (1978) Optical Properties of Amorphous Magnesium-Bismuth Alloys. PhD thesis, University of Glasgow.

Abstract

The amorphous magnesium-bismuth alloys were prepared by the co-evaporation technique . The compositions of these alloys were determined from the rate of deposition of the two constituents using the quartz crystal oscillators. A new method to calculate the densities of the alloys from the rates of deposition is outlined. The electrical measurements of the d.c. resistivity shows that the Mg-Bi alloys close to the stoichiometric composition Mg3Bi2 has a very high resistivity. From the optical measurements, the stoichiometric Mg3Bi2 compound is found to have an optical band gap 0.264 + 0.006 ev. The dramatic changes in the optical band gap due to annealing make the proposed model densities of states of doubtful relevance.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Keywords: Materials science
• Date of Award: 1978
• Depositing User: Enlighten Team
• Unique ID: glathesis:1978-78780
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 30 Jan 2020 14:55
• Last Modified: 30 Jan 2020 14:55
• URI: https://theses.gla.ac.uk/id/eprint/78780