access icon free Energy gap variation due to Al content in SmFe1− x Al x O3 and its application in optics

The optical properties of Al-doped SmFeO3 (SmFe1−x Al x O3, for x varying from 0 to 0.15), were monitored by diffuse reflectance spectroscopy (DRS). The diffuse reflectance spectra were used to study the surface properties of the samples. The DRS spectra exhibit three reflection bands at different regions. The product was characterised by X-ray diffraction to confirm the formation of single-phase crystals of the perovskite structure. The bandgap, a major factor in determining the optical performance of any material, was found to be tunable with Al content (x).

Inspec keywords: infrared spectra; doping; visible spectra; aluminium; iron compounds; crystal structure; energy gap; X-ray diffraction; ultraviolet spectra; surface structure; samarium compounds

Other keywords: energy gap; perovskite structure; single-phase crystals; surface properties; SmFe1−xAlxO3; diffuse reflectance spectroscopy; optical properties; X-ray diffraction; reflection bands

Subjects: Crystal structure of specific inorganic compounds; Solid surface structure; Infrared and Raman spectra in inorganic crystals; Optical constants and parameters (condensed matter); Visible and ultraviolet spectra of other nonmetals; Doping and implantation of impurities

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2018.5216
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