Abstract
This article reports on the synthesis, photoluminescence and thermoluminescence properties of samarium and dysprosium ions doped barium gadolinium titanate powder ceramics. The prepared samples were characterized by X- ray diffraction spectrum and it is observed that Sm3+ and Dy3+ ions doped barium gadolinium titanate powder ceramics are orthorhombic structure. From the SEM images of Sm3+ and Dy3+: BaGd2Ti4O12 ceramics, it is observed that the average grain size in the range ∼200-300 nm. The elements present in the composition are confirmed by the EDAX profiles and functional groups have been identified by using Fourier Transform Infrared spectroscopy. Photoluminescence spectra of Sm3+: BaGd2Ti4O12 ceramics have shown strong reddish- orange emission at 598 nm (4G5/2→6H7/2) with an excitation wavelength λexci = 408 nm (6H5/2→4F7/2) and Dy3+: BaGd2Ti4O12 ceramics have shown yellow emission at 587 nm (4F9/2→ 6H13/2) with an excitation wavelength λexci = 427 nm (6H15/2 → 4G11/2). Thermoluminescence (TL) nature of Sm3+ and Dy3+ ions doped BaGd2Ti4O12 ceramics has been observed with gamma ray irradiation.
Funding
This work was supported by the UGC, New Delhi in the form of Major Research Project F.No.41-919/2012 (SR) sanctioned to the author (CNR) and also provided the financial assistance to one of the authors (BMS) in the form of Project Fellow, who would like to thank the Secretary, UGC, New Delhi, India.