Abstract

This study reports the effect of Gd2O3 on physical, structural, optical, and magnetic properties of 40SiO2−40B2O3−10V2O5−(10−x)Fe2O3−xGd2O3 (x = 2, 4, and 6 mol%) glasses. The structural, optical, and magnetic characteristics of the as-quenched samples were obtained using various experimental techniques. The optical band gap was decreased with the concentration of Gd2O3 in place of Fe2O3 in glass composition i.e., 4.03 to 3.81 eV whereas, the theoretical optical basicity and oxide ion polarizability increase. The magnetic nature of the as-prepared glasses is soft and exhibited saturation magnetization in the range of 2.1 to 2.6 emu/g with a critical magnetic field of 122 to 138 Oe. With a higher critical magnetic field, the inclusion of Gd2O3 reduces saturation magnetization. This phenomenon could be related to the change in local structure due to glass network modification by Gd2O3 and the presence of some nanocrystalline or microcrystalline phase in a glass matrix. The developed glass has the potential to be used as a thermoseed for treating cancer patients with hyperthermia.

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