{"title":"Thermoluminescence Studies of High Energy X-Rays Irradiated Dy3+ Doped Mg0.65Zn0.3Al2O4:0.05Dy Nanophosphor","authors":"Pankaj Pathak, Manisha Singh, Pankaj Kumar Mishra, Ajay Mittal, Snehal Jani, Ranjeet Brajpuriya","doi":"10.1002/crat.202300223","DOIUrl":null,"url":null,"abstract":"<p>The solution combustion synthesis method is employed to prepare Magnesium, Zinc, Aluminate doped with dysprosium (Dy<sup>3+</sup>) using the general formula Mg<sub>(1-x-y)</sub> Zn<sub>(y)</sub>Al<sub>2</sub>O<sub>4</sub>: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<sup>−1</sup>, 503.12 cm<sup>−1</sup> correspond to the AlO<sub>6</sub> 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<sup>−1</sup>). Nanophosphor Mg<sub>0.65</sub>Zn<sub>0.3</sub>Al<sub>2</sub>O<sub>4</sub>: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.</p>","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystal Research and Technology","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/crat.202300223","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Chemistry","Score":null,"Total":0}
引用次数: 0
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.
期刊介绍:
The journal Crystal Research and Technology is a pure online Journal (since 2012).
Crystal Research and Technology is an international journal examining all aspects of research within experimental, industrial, and theoretical crystallography. The journal covers the relevant aspects of
-crystal growth techniques and phenomena (including bulk growth, thin films)
-modern crystalline materials (e.g. smart materials, nanocrystals, quasicrystals, liquid crystals)
-industrial crystallisation
-application of crystals in materials science, electronics, data storage, and optics
-experimental, simulation and theoretical studies of the structural properties of crystals
-crystallographic computing