Gagan Kumar Bhargava is a Professor in the Department of Physics at Bahra University, Waknaghat, India and adjunct faculty at Graphic Era (Deemed to be University), Dehradun, India. His current research interests cover the synthesis of nanomaterials for antenna applications, EMI shielding applications, electromagnet applications, and cancer treatment. Pankaj Sharma is a professor in the Applied Science Department, National Institute of Technical Teachers Training & Research, Chandigarh, India. He is an experimentalist by inclination, and his research interests include the development of nanomaterials for various energy, optoelectronic, and biomedical applications. Sagar E. Shirsath is a visiting fellow at the University of New South Wales, Sydney, Australia. His research is mainly focused on nanostructured materials, magnetism and magnetic materials, ferroelectric/piezoelectric materials, spintronics, and electro-/magneto-caloric and multiferroic materials. Dr. Sanjeev Kumar is currently working as Professor and Head, at Department of Physics, Chandigarh University. He has received his Ph.D. in Physics from the University of Hyderabad in the field of Experimental Condensed Matter Physics. His research interests include Interplay of Superconductivity and Magnetism in bulk and low-dimensional materials. During the career he remained Visiting Fellow at Tata Institute of Fundamental Research, Mumbai, India and worked as Visiting Scientist at UM-DAE Centre for Excellence in basic Sciences, Mumbai India. He has published more than 35 research papers in peer reviewed International Journals of repute like Physical Review Letters, Physical Review B, Applied Physics letters, Journal of Applied Physicsand conference proceedings. He has more than 12 years of Teaching, Research and administrative experience. Dr. Sumit Bhardwaj has obtained his M.Tech. degree in Metallurgical and Materials Engineering from Thapar University, India and Ph.D. degree in Materials Science and Engineering from National Institute of Technology, Hamirpur, India. His current research interests are in the field of ferrite, multiferroic, and composite materials. He has more than 12 years of research and teaching experience. Before joining to Chandigarh University, he has worked at Punjab Engineering College (Deemed to be University), Chandigarh, India. He has published more than 23 research papers in different peer reviewed international journals and 3 book chapters and also edited 1 book. He has supervised two M. Tech. dissertations, and currently he is supervising three Ph.D. students. He has also edited 2 books.

• 1. Spinel ferrites: introduction, types and structural analysis2. Recent progress in chemical synthesis techniques of spinel ferrites3. Estimation of cations distribution through internal field nuclear magnetic resonance in conjunction with supplementary techniques4. Basic theories responsible for electrical and magnetic properties in spinel ferrites5. Effect of synthesis techniques on the electric and magnetic properties of spinel ferrites6. Bio-medical applications of spinel ferrite nanoparticles7. Selection of spinel ferrite-based electromagnetic wave absorbing composites using AHP-based TOPSIS and VIKOR approaches8. Spinel ferrites for wastewater treatment applications9. Spinel ferrites as gas sensors10. Photo-Fenton applications of spinel ferrites11. Pressure induced analysis on the structural, optoelectronic, magnetic, and thermoelectric properties of spinel ferrites: a density functional theory study