Mixed Magnetic Oxides

About The Book

Finely tuned electrical and magnetic properties are the goal of all materials scientists. More energy efficient electronic devices, better performing hybrid electrical vehicles and smarter data storage devices are among potential applications for suitable material. Spinel ferrites possess the crystal structure of the natural spinel MgAl2O4. This structure is particularly stable, since there is an extremely large variety of oxide which adopt in fulfilling the conditions of overall cation to anion ratio of 3/4. Mixed magnetic oxides have fascinating properties with coexistence of ferrous and ferric cations in coordination with various cation combinations through stochiometric. The spnel structure is able to form an extremely wide variety of total solid solutions. It means the composition of a given ferrite can be strongly modified, while the basic crystalline structure remains the same. Present book introduces the method and techniques for synthesis and characterization of mixed magnetic oxides having spinel structure. Mixed magnetic oxides are basically spinel ferrites having specific stoichiometry and compositions of different cations, which is stable and has extremely large potential of variety of oxides depending on cations and cation distributions among octahedral and tetrahedral sites. The book presents study of two solid solutions, Ni0.7Mg0.3AlxFe2-xO4 and Ni0.7Mg0.3CrxFe2-xO4.

The book has four chapters. First chapter introduces the basic structure and compositions sensitive properties of mixed magnetic oxides having spinel structure along with background of development in study of spinel ferrites. The second chapter presents information about spinel structure and ferrimagnetism. The third chapter is regarding experimental techniques and characterization of the mixed magnetic oxides. The last and fourth chapter gives systematic analysis of material properties achieved by the solid solutions under investigation. Thus the book is intended to introduce the most fundamental things required for the synthesis and characterization for solid solutions of mixed magnetic oxides in order to develop research interest. Hope the book will be useful for beginners, students, teachers and researchers.

About The Authors

Dr. Dilip Kumar V. Meshram is Associate Professor and Head of Department of Physics at Vaidyanath College of Arts, l. and Commerce, Parli-Vaijnath, Dist. Beed, having 28 years of experience in academics and research. He received M.Sc. and Ph.D. in Physics from Dr. Babasaheb Ambedkar Maratwada University, Aurangabad, Maharashtra. He has worked as a Vice-Principal at Vaidyanath College, Parli and also worked on different committees of university as well as UGC. He also awarded with teacher fellowship from UGC. He has published more than 15 research papers in various National and International Journals of high repute and conferences and also working as a Chief Guest Editor of International Journal of Advance and Innovative Research.

Dr. Madhav Namdev Rode is Associate Professor at Vaidyanath College of Arts, Science and Commerce, Parli-Vaijnath, Dist. Beed, with close to 20 years of experience in academics and research. He received M.Sc. and Ph.D. in Physics from Dr. Babasaheb Ambedkar Maratwada University, Aurangabad, Maharashtra State. He has also working as a Member, Board of Studies and Research guide in Physics, Dr. Babasaheb Ambedkar Maratwada University, Aurangabad, and his research is focused on Non-Linear optical crystals, Self frequency doubling crystals, NLO properties of Nano material’s and optical biosensors, radiation effects and defects in materials, nuclear technology and radiation protection, low-z materials, polymer materials.

Four research students working under his guidance and two students already awarded Ph.D. degree under his supervision. Two minor research projects sanctioned by UGC- New Delhi successfully completed. He has published more than 75 research papers in various National and International Journals of high repute and conferences.