Handbook of Electromagnetism

Electromagnetism is the study of the electromagnetic force which is a type of phy sical interaction that occurs between electrically charged particles. The electromagnetic force usually manifests as electromagnetic fields, magnetic fields and light. The electromagnetic force is one of the four fundamental interactions in nature. The other three are the strong interaction, the weak interaction, and gravitation. The electromagnetic force plays a major role in determining the internal properties of most objects encountered in daily life. The book "Handbook of Electromagnetism" is divided into seven chapters. We introduce the synthesis, crystal structure, magnetic properties, and the formation mechanism of the original -Fe2O3 in the first chapter. We give a detailed account of both magnetic order and their origin in second chapter. The computational unified field theory (CUFT) has been described in third chapter. Electromagnetic studies of multilayers have been introduced in the fourth chapter. The artifically structured multilayers (ML) gave opened a new field of interface magnetism. Fifth chapter presents a brief overview of the historical development of the theory of ferromagnetic resonance in magnetic nanostructures. The changes in the EMR lineshape are studied in sixth chapter for diverse magnetic materials in the 77-500 K temperature range; the different magnetic transitions are quantified by means of linewidth ([delta]Hpp) and the resonant field (Hres) as a function of temperature. Microwave absorption in nanostructured spinel ferrites has been introduced in last chapter.