[LGPR] Publication Success Series- Dr G Ravi Kumar

Dr G Ravi Kumar, Sreenidhi Institute of Science and Technology JNT University, Hyderabad-India

Applied Physics A, 14 (1) (2025) 414-421 https://link.springer.com/journal/339

Impact Factor: 2.5

Applied Physics A is a peer-reviewed journal publishing experimental and theoretical research in applied physics and materials science. Since the launch in 1973, Applied Physics A has become one of the most recognized journals in the field.

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CIE Chromacity of CuO-doped CaO-Y₂O₃-SiO₂ B₂O₃ glasses. https://doi.org/10.1007/s00339-025-08624-6

Electron Paramagnetic Resonance, Optical, Photoluminescence and  Radiation Shielding Studies of CuO-doped B2O3-Y2O3-SiO2-CaO Glasses https://doi.org/10.1007/s00339-025-08624-6

Author Details:

Ravi Kumar Guntu

Lincoln University College, 47301, Petaling Jaya, Selangor Darul Ehsan, Malaysia

Department of Physics, Sreenidhi Institute of Science and Technology, Hyderabad, Telangana, India, 501 301

Madabushanam Gopikrishna,

S. Shashi Devi

Department of Physics, Sreenidhi Institute of Science and Technology, Hyderabad, Telangana, India, 501 301

Mopidevi Tejaswi

Department of Physics, CMR Technical Campus, Hyderabad, Telangana, India, 501401

Satheesh Babu

Lincoln University College, 47301, Petaling Jaya, Selangor Darul Ehsan, Malaysia

Mohammad Israr

Lincoln University College, 47301, Petaling Jaya, Selangor Darul Ehsan, Malaysia

Maryam Abacha American University of Nigeria, Kano, 700213, Nigeria

Abstract

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This study investigates the structural, morphological, optical, and radiation shielding properties of CuO-doped CaO-Y₂O₃-SiO₂-B₂O₃ glasses using a range of analytical techniques. X-ray diffraction (XRD) confirmed the amorphous nature of the glasses. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) revealed a homogeneous distribution of CuO and a smooth microstructure. Differential thermal analysis (DTA) provided insights into glass transition temperatures, crystallization behavior, and thermal stability. Structural changes induced by CuO doping were examined using Fourier transform infrared (FTIR) and Raman spectroscopy, showing modifications in silicate and borate networks due to CuO incorporation. Electron paramagnetic resonance (EPR) indicated the presence of Cu2⁺ ions mainly in octahedral coordination, influencing the electronic structure and defect states. Optical absorption measurements demonstrated a systematic decrease in band gap energy with increased CuO content, attributed to enhanced electronic transitions. Photoluminescence (PL) spectroscopy showed strong emission behavior, supporting the potential of these glasses in optoelectronic and photonic applications. Radiation shielding capabilities were evaluated by calculating mass attenuation coefficients (MAC), half-value layers (HVL), mean free paths (MFP), and radiation protection efficiency (RPE). Results indicated improved gamma-ray attenuation with higher CuO content, positioning these materials as promising candidates for radiation protection in medical and nuclear environments. Overall, the study highlights the multifunctional characteristics of CuO-doped CaO-Y₂O₃-SiO₂-B₂O₃ glasses, demonstrating their potential use in advanced optical devices, photonic technologies, and radiation shielding applications.

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