Parmod Kumar is an Assistant Professor at J C Bose University of Science and Technology, YMCA Faridabad, India. He has been recipient of prestigious DST-INSPIRE Faculty award, DAAD Fellow, etc. His research interest includes defects induced magnetism in oxides, wastewater treatment and irradiation/ implantation induced changes in oxides. He has published ~ 50 SCI-indexed publications. Jitendra Pal Singh works at Pohang Accelerator Laboratory, Pohang, South Korea. His research interests are irradiation studies in nanoferrites, thin films and magnetic multilayers. He also studied the irradiation and implantation effects in ferrite thin films and nanoparticles. He has more than 100 SCI-indexed publications. Vinod Kumar is on the DST-INSPIRE Faculty at Indian Institute of Technology Delhi, New Delhi India. He has worked at IUAC, New Delhi, India; UFS, Bloemfontein, South Africa; ICCF, UCA, France and University of Tulsa, US. His research focus is on oxide based nanomaterials for solar cells as well as solid state lighting applications and the role of irradiation on this. He has more than 100 SCI-indexed publications. K. Asokan is a senior scientist at the Inter-University Accelerator Centre. He has been post-doctoral fellow in Tamkang university and Brain Pool Scientist in Inha University, South Korea. His research interests are in understanding the ion beam interaction in materials and synchrotron based spectroscopic studies. He has published over 400 SCI-indexed publications.