Cairo University

MTPR Journal


Tuning of energy gap with Al content in SmFe1-xAlxO3 multiferroic

M.A. Ahmed, M.K. Abdelmaksoud, N.G. Imam, and Y. A. Saeid
a Materials Science Lab. (1) Physics Department, Faculty of Science, Cairo

University, Giza , Egypt.

b Experimental Physics Department, Nuclear Research Center, Atomic Energy

Authority, 13759, Cairo, Egypt.

Vol./Issue: 14 , id: 102

Al doped SmFeO3 (SmFe1-xAlxO3; 0.0 ≤ x ≤0.15 with step 0.05) were synthesized by double sintering ceramic technique. XRD and FTIR were used to probe the structure of the nucleated perovskite. XRD and FTIR analysis confirmed the formation of single-phase orthorhombic crystals of perovskite structure. The optical properties of the sample were monitored by diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) techniques. Diffuse reflectance spectra were used to study the surface properties of the samples. It shows three reflection bands at different regions. It was found that the band gap is tunable with Al content. PL spectra show UV, blue and red emissions slightly shifted with Al content. The PL intensity of multiferroic material enhanced with increasing Al content.