Structural and Luminescence Properties of Eu³⁺ and Dy³⁺-Doped Magnesium Boro-Tellurite Ceramics

Abstract:

Boro-tellurite ceramics with the composition of 60B₂O₃-10TeO₂-30MgO-1Eu₂O₃-1Dy₂O₃ in mol % were prepared by solid-state reaction method. The samples were characterized by x-ray diffraction (XRD), photoluminescence (PL) and FTIR spectroscopy. The XRD studies have revealed the presence of MgTe₂O₅ and MgB₆O₁₀.7H₂O crystalline as the major and minor phases in these samples. The FTIR spectra reveal the presence of B-O vibrations of B-O-B, BO₃ and BO₄ bridging oxygen and Te-O stretching modes of Te₂O, TeO₃ and TeO₄ units in the prepared ceramics. The PL peaks were assigned to the Eu³⁺ transitions ⁵D₀⁷F₀ at 580 nm, ⁵D₀⁷F₁ at 591 nm and 596 nm, ⁵D₀⁷F₂ at 612, 618 and 621 nm, ⁵D₀⁷F₃ at 651 nm, and ⁵D₀⁷F₄ at 692 nm and 702 nm when excited at 394 nm.

• Periodical: Advanced Materials Research (Volume 895)
• Pages: 269-273
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.895.269
• Online since: February 2014
• Authors: Nur Zu Ira Bohari, Rosli Hussin, Zuhairi Ibrahim, M.H. Haji Jumali, Royston Uning, Aliff Rohaizad
• Keywords: Luminescence, Magnesium Boro-Tellurite Ceramic, Structure

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