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Determination of thermoluminescence kinetic parameters of terbium-doped zirconium oxide |
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| Authors: | T Rivera J Azorí n C Falcony E Martí nez and M Garcí a |
| Institution: | a Departamento de Fisica Universidad Autónoma Metropolitana-Iztapalapa 09340 México, D.F., Mexico b Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada-IPN 11500 México, D.F., Mexico c Centro de Investigación y Estudios Avanzados-IPN 07000 México, D.F., Mexico d Instituto de Investigaciones en Materiales-UNAM 04510 México, D.F., Mexico |
| Abstract: | In recent years considerable importance has been attached to zirconium oxide doped with rare earth (ZrO2 : RE) thin films due to their desirable characteristics for use in UV dosimetry. In our laboratories we have developed a method to prepare ZrO2 : RE thin films. Dosimetric characteristics of these materials have been reported previously (Azorin et al., Radiat. Meas. 29 (1998) 315; Radiat. Prot. Dosim. 85 (1999) 317) and results of these have stimulated continued development and analysis of the thermoluminescence mechanism. Two important parameters to be determined in TL studies are the activation energy (E) and the frequency factor (s). This paper presents the results of determining kinetic parameters of terbium-doped zirconium oxide (ZrO2 : Tb) thin films, exposed to 260 nm UV light, using the Lushchik (Sov. Phys. JETF 3 (1956) 390) and Chen (J. Appl. Phys. 40 (1969) 570; J. Electrochem. Soc. 166 (1969) 1254) methods. Kinetic analysis of the glow curve shows second order kinetics for both the first and second glow peaks. |
| Keywords: | Thermoluminescence Kinetics Zirconium oxide |
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