Raman investigation of ion beam synthesized β-FeSi2

Abstract

The Raman spectra of ion beam synthesized (IBS) β-FeSi2 are investigated and evidence for the presence of a net tensile stress is presented. Possible origins of the observed stress are suggested and a simple model is proposed in order to calculate a value of the observed stress. A correlation between the tensile stress, the nature of the band gap, and the resulting light emitting properties of IBS β-FeSi2 is suggested.

Phase transformation in FeSi2 nanowires

“…Among the transition metal silicides, FeSi 2 is the only reported light emitter [1,2] and has attracted considerable theoretical and technological interest during the past decade. Iron disilicide is particularly interesting because it is the only transition metal-silicon compound reported to appear in both semiconducting and metallic phases.…”

Self-organized patterns along sidewalls of iron silicide nanowires on Si(110) and their origin

“…This is the only transition metal silicide that has been reported to be a light emitter. 9,10 Metallic nanowires might be used in devices or as electrodes. Nanowires of a particular metallic phase of FeSi 2 have also shown a magnetic response.…”

Iron disilicide formed in a-Si〈Fe〉 thin films by magnetron co-sputtering

“…It should be noted that in all cases the peak at 247 cm À1 (Ag mode) was most intense. Because of this, many authors focus their attention on this peak only [9,10]. As can be seen from Fig.…”