Ionoluminescence studies of combustion synthesized Dy 3+ doped nano crystalline forsterite

• Published in: Current applied physics 2011, 11(6), , pp.1274-1277
• Main Authors: Lakshminarasappa, B.N., Prashantha, S.C., Singh, Fouran
• Format: Article
• Language: English
• Subjects: Ionoluminescence; Mg 2SiO 4:Dy 3; Phosphor; SHI; 물리학
• ISSN: 1567-1739; 1878-1675
• DOI: 10.1016/j.cap.2011.03.055

Ionoluminescence (IL) of nano crystalline Mg 2SiO 4:Dy 3+ pellet samples bombarded with 100 MeV Si +8 ions with fluences in the range (1.124–22.480) × 10 12 ions cm −2 have been studied. Two prominent IL bands with peaks at ∼480 nm and ∼580 nm and a weak band with peak at ∼670 nm are recorded. The characteristic peaks are attributed to luminescence center activated by Dy 3+ ions due to the transitions 4F 9/2→ 6H 15/2, 6H 13/2 and 6H 11/2. It is found that IL intensity initially decreases rapidly and then continuous to decrease slowly with further increase in ion fluence. The reduction in the Ionoluminescence intensity with increase of ion fluence might be attributed to degradation of Si–O ( 2 ν 3) bonds present on the surface of the sample and/or due to lattice disorder produced by dense electronic excitation under heavy ion irradiation. ► IL spectroscopy is a very useful method for understanding material phenomena such as radiation matter interaction, impurity characterization, local symmetry studies, origin, colour and provenance studies of minerals. ► Minerals have been too an inspirational material in science and technology. ► Perhaps one of the most interesting aspects of minerals nowadays in this field is the fact that based on this mineral knowledge the scientific community has been able to propose and develop new materials adapted to solving a great variety of problems.