Gadolinium doped lithium aluminium borate materials synthesized and characterized for thermoluminescence dosimetry
Patrick, O. Ike
Caritas University, Nigeria
: Res J Opt Photonics
Abstract
Lithium aluminium borate material was prepared to be used for dosimetric applications in radiation processes. Different samples of lithium aluminium borate materials were doped with different mole concentrations of gadolinium in order to improve on the structural and dosimetric properties. The samples of lithium aluminium borate materials were prepared by the high temperature solid state sintering technique. The materials were characterized for their structural, morphological, thermal analysis, optical properties and dosimetric properties using X-ray diffractometer (XRD), Scanning electron microscope (SEM), thermogravimetric analysis (TGA), UV-vis-NIR spectrophotometer and thermoluminescence reader/irradiator respectively. The kinetic analysis of the main glow peak, was used to determine the order of kinetics, frequency factor, and the activation energy. The crystalline size of the samples of undoped and gadolinium (0.3%) doped Li3Al3(BO3)4 materials obtained from the corresponding peaks at 2θ angle of 25.79o was 53.95 nm and 36.38 nm respectively. The grain size for the undoped and gadolinium doped lithium aluminium borate had a range of values of 140 – 160 nm, and 80 – 100 nm respectively. The effective atomic figure for the undoped lithium aluminium borate compounds was 9.41. The dose response of the undoped and gadolinium doped (0.3%) lithium aluminium borate samples irradiated was observed not to be perfectly linear from 20 to 150 Gy. The optical energy band gap for the undoped and gadolinium doped lithium aluminium borate were found within 3.00 eV and 4.35 eV respectively. The inclusion of gadolinium as dopant increased the energy band gap for the sample of lithium aluminium borate.
Biography
Ike Parick Okezie is a medical Physicist and has completed his PhD since June 2021, at the University of Nigeria, Nsukka, Enugu State, Nigeria. He has published more than ten papers in reputable journals. Currently, he is the head of industrial physics depaertment, Caritas University, Amorji-Nike, Enugu State, Nigeria. He is the Chairperson, Faculty of Natural Science research committee, Caritas University, Amorji Nike Enugu since september 2022. He has been a member of African Nano International research Group, University of Nigeria, Nsukka, Enugu State, Nigeria for the past six years and has been serving as the editorial advisory board member of a reputable journal.
