ISSN:
1432-0630
Keywords:
78.60. Kn
;
61.70.−r
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract ZrO2 pellets doped by ZnO after 302 nm UV irradiation have been studied for ThermoLuminescent (TL) glow. The TL peak at 90°C for the 1100°C sintered ZrO2 pellet shifted to 85°C with intensity increased three times for the 1% ZnO doped ZrO2 sintered at 1100°C. The peak intensity at 210°C for the doped one is only one tenth of the undoped one. The emission spectra of thermoluminescence for undoped and ZnO-doped ZrO2 revealed that the effect of ZnO doping is to increase the number of luminescent centers. The trapping center associated to the 90°C TL peak is explained by the similar model as that of Kirsh et al. For the case of 210°C TL peak, we have proposed two different models of trapping centers; one is the Zr4+ in an asymmetrical oxygen arrangement, and the other is the defect complex formed from an oxygen vacancy and an anion.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00332437
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