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- Title
Thermoluminescence Studies of High Energy X‐Rays Irradiated Dy<sup>3+</sup> Doped Mg<sub>0.65</sub>Zn<sub>0.3</sub>Al<sub>2</sub>O<sub>4</sub>:0.05Dy Nanophosphor.
- Authors
Pathak, Pankaj; Singh, Manisha; Mishra, Pankaj Kumar; Mittal, Ajay; Jani, Snehal; Brajpuriya, Ranjeet
- Abstract
The solution combustion synthesis method is employed to prepare Magnesium, Zinc, Aluminate doped with dysprosium (Dy3+) using the general formula Mg(1‐x‐y) Zn(y)Al2O4:xDy (x = 0.05 and y = 0.3 mol%). From X‐ray diffraction studies, the crystal structure belongs to a cubic close‐packed spinel structure with space group Fd3ˉm and an average crystallite size is 26.18 nm. In the Fourier transform infrared spectra, the peaks at 683.69 cm−1, 503.12 cm−1 correspond to the AlO6 groups. The peak temperature (Tm) from the Thermoluminescent glow curve is recorded at 235°C, 237°C, and 235°C, at irradiation doses of 600 Gy, 800 Gy, and 1000 Gy, respectively. The kinetic parameters are evaluated from the thermoluminescent glow curve by calculating the activation energy (E), order of kinetics (b), and frequency factor (s−1). Nanophosphor Mg0.65Zn0.3Al2O4:0.05Dy shows sub linear dose relationship at doses 600–675 Gy and 925–1000 Gy. Further, at doses between 675 and 925 Gy, it shows a super linear relationship. The optimum activation energy (E) of 0.77–0.82 eV and negligible fading make it suitable for high radiation thermoluminescent dosimetry.
- Subjects
THERMOLUMINESCENCE; RADIATION dosimetry; SELF-propagating high-temperature synthesis; X-rays; ACTIVATION energy; DOSE-response relationship (Radiation)
- Publication
Crystal Research & Technology, 2024, Vol 59, Issue 2, p1
- ISSN
0232-1300
- Publication type
Article
- DOI
10.1002/crat.202300223