Tổng hợp và phân tích đường cong tích phân nhiệt phát quang của LiAlO2
synthesised LiAlO2 was studied for its structure and morphology by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The thermoluminescence glow curve of LiAlO2 was analysed by deconvolution using the first-order, second-order, and general-order kinetic models. LiAlO2 materi...
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| Những tác giả chính: | , , |
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| Formato: | Artigo |
| Idioma: | Vietnamese |
| Publicado em: |
2025
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| Assuntos: | |
| Acesso em linha: | https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/290721 |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Resumo: | synthesised LiAlO2 was studied for its structure and morphology by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The thermoluminescence glow curve of LiAlO2 was analysed by deconvolution using the first-order, second-order, and general-order kinetic models. LiAlO2 material exhibits a single-phase gamma structure when calcined at temperatures starting from 900oC. The thermoluminescence glow curve of LiAlO2 consists of two peaks at 136 and 248oC, while peak 248oC is considered a dosimetric peak. The γ-LiAlO2 material was successfully synthesised using the sol-gel method combined with EDTA. The single-phase gamma LiAlO2 material was obtained after being sintered at temperatures greater than 900°C for 4 hours with lattice constants and density determined as follows: a=5.16870 Å, c=6.26790 Å, and δ=2.615 g/cm³. The thermoluminescence glow curve of LiAlO2 was analysed using the glow curve deconvolution method, which showed the best fit with the general-order model, with a fitting factor FOM=1.08×10-2 and a kinetic order b=1.79. |
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