Spectroscopic Investigation of γ-LiAlO₂ Ceramic Doped with Tetrahedrally Coordinated Cr³⁺ Ions

Abstract:

The γ-LiAlO₂: Cr³⁺ ceramics were successfully fabricated using multi-mode cavity microwave furnace, and the samples absorption spectrum was measured at room temperature. There are five bands in the red and near-infrared region. Using the crystal-field theory and introducing the average covalent factor model, we calculated the energy-level splitting of Cr³⁺ ions in γ-LiAlO₂ and successfully explained these bands. These calculation results are in good agreement with the optical experiment data.

• Periodical: Advanced Materials Research (Volumes 785-786)
• Pages: 701-705
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.785-786.701
• Online since: September 2013
• Authors: Jian Ma
• Keywords: Absorption Spectrum, Average Covalent Factor, Crystal-Field Theory, Energy-Level Splitting, Microwave Sintering, γ-LiAlO₂:Cr³⁺ Ceramic

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