The fluorescence and thermoluminescence characteristics of $\alpha$-Al2O3:C ceramics

doi:10.1088/1674-1056/19/7/077805

Abstract This paper reports that polycrystalline $\alpha$-Al₂O₃:C ceramics are fabricated by conventional ceramics process. The excitation, emission spectra, thermoluminescence (TL) and optical stimulated luminescence (OSL) of $\alpha$-Al₂O₃:C polycrystalline ceramics are investigated. There exists 410nm maximum emission peak which is caused by recombination of an electron with F⁺ centre to produce an excited F centre. The samples show three clear TL glow peaks at 405, 493 and 610K. The attenuation constant of exponentially decaying fast component ($\tau$₁) and slow component($\tau$₂) of OSL curve are 8.43s and 41.73s, respectively. Those fluorescence and thermoluminescence characteristics are similar with $\alpha$-Al₂O₃:C crystal.

Keywords: $\alpha$-Al₂O₃:C ceramics thermoluminescence optical stimulated luminescence

Accepted manuscript online:

PACS:	78.55.Hx	(Other solid inorganic materials)
	78.60.Kn	(Thermoluminescence)
	81.05.Je	(Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60578041), the Sciences and Technology Commission Foundation of Shanghai, China (Grant No. 08520707300) and the Key Basic Research Project of Science and Technology of Shanghai (Grant No. 09JC1406500).

Cite this article:

Zhang Bin(张斌), Lu Shen-Zhou(陆神洲), Zhang Hao-Jia(张浩佳), and Yang Qiu-Hong(杨秋红) The fluorescence and thermoluminescence characteristics of $\alpha$-Al₂O₃:C ceramics 2010 Chin. Phys. B 19 077805

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The fluorescence and thermoluminescence characteristics of $\alpha$-Al2O3:C ceramics

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The fluorescence and thermoluminescence characteristics of $\alpha$-Al₂O₃:C ceramics