Elaboration and optical study of BaCO₃-RE₂O₃ materials

By Brahim Abidine

Nanopowders of undoped and co-doped barium carbonate (BaCO₃) with (Eu3⁺, Dy3⁺) ions were prepared using the self-combustion method. In the first part, we investigated the effect of the europium ion concentration on the BaCO₃ matrix. The results obtained by XRD revealed that the samples consist of the orthorhombic BaCO₃ phase. We used the Judd-Offelt theory to calculate the Judd parameters and deduce the spontaneous emission probabilities, the lifetimes of the emitting levels and the quantum yield of the emission. The results showed that 1% Eu3⁺-doped BaCO₃ exhibited favourable characteristics for laser emission in the red region. In the second part, we studied the spectroscopic properties of the Eu3⁺/Dy3⁺ ions in the matrix. The results obtained via electron paramagnetic resonance (EPR) confirm the presence of Eu3⁺ and Dy3⁺ ions in BaCO₃ through the resonance of their unpaired electrons. Analysis of the optical properties of rare-earth-doped BaCO₃ revealed the existence of energy transfer from Dy3⁺ ions to Eu3⁺ ions.

• Format: Paperback
• Language: English
• ISBN: 6209726828
• ISBN13: 9786209726828
• Release Date: March 2026
• Publisher: Our Knowledge Publishing
• Length: 88 Pages
• Weight: 0.28 lbs.
• Dimensions: 0.2" x 6.0" x 9.0"