This book focuses on advanced magnetics materials. It brings forth the novel developments in latest technologies, modern characterization approaches, theory and usage of advanced magnetics materials. It talks about a wide spectrum of topics: technology and characterization of fast quenching nanowires for information technology; fabrication and characteristics of hexagonal ferrite films for microwave communication; surface reconstruction of magnetite for spintronics; synthesis of multiferroic composites for new biomedical uses, optimization of electroplated inductors for microelectronic devices; theory of magnetism of Fe-Al alloys; and two developed analytical methods for modeling of magnetic materials with the help of Everett integral and the inverse problem approach. This book concentrates on a varied group of readers with common background in physics or materials science, but it can also help specialists in the field of magnetic materials.