The book you are now holding represents the final step in a long process for the editors and organizers of the Advanced Study Institute on hard magnetic materials. The editors interest in hard magnetic materials began in 1985 with an attempt to better understand the moments associated with the different iron sites in Nd Fe B. These 14 moments can be obtained from neutron diffraction studies, but we qUickly realized that iron-57 Mossbauer spectroscopy should lead to a better determination of these moments. However, it was also realized that the complex Mossbauer spectra obtained for these hard magnetic materials could not be easily understood without a broad knowledge of their various structural, electronic, and magnetic properties. Hence it seemed useful to the editors to bring together scientists and engineers to discuss, in a tutorial setting, the various properties of these and future hard magnetic materials. We believe the inclusion of engineers as well as scientists in these discussions was essential because the design of new magnetic materials depends very much upon the mode in which they are used in practical devices.

Permanent magnets play an increasingly important role in modern society because they are vital components of numerous domestic and industrial devices. The last few decades have witnessed a quite extraordinary development in the use of hard magnetic materials, especially after the advent of rare earth permanent magnets. The rare earth permanent magnets are unequalled because they combine a high magnetization with an extraordinary magnetic hardness which allows the use of such magnets having the extreme shapes and small dimensions as required in modern devices.

Rare-earth iron permanent magnets combine the magnetization of iron or cobalt with the anisotropy of a light rare-earth in intermetallic compounds which exhibit nearly ideal hysteresis. The rare-earth iron magnets are indispensable components in a vast range of electronic and electromechanical devices. This book covers the principles of permanent magnetism, magnet processing, and applications in a series of interlocking chapters written by experts in each area. Based on the findings of the Concerted European Action on Magnets, it is a definitive account of the field, designed to be read by physicists, materials scientists, and electrical engineers.

Handbook of Advanced Magnetic Materials will provide a comprehensive review of recent progress in magnetic materials research. Coverage includes nanostructural effects, characterization and simulation, fabrication and processing, and properties and applications of advanced magnetic materials.The reference consists of four volumes:Volume 1 is devoted to nanostructured magnetic materials, emphasizing size effects.Volume 2 reviews both experimental methods and simulation techniques for the characterization of magnetic materials.Volume 3 outlines recent developments in processing of advanced magnetic materials. Magnetic properties cover a wide spectrum of soft magnetic materials, hard magnetic materials, recording materials, sensor materials and others.Volume 4 introduces various magnetic materials and their applications with a detailed description of the processing, properties and applications.

The main theme of this book is micromagnetism and microstructure as well as the analysis of the relations between characteristic properties of the hysteresis loop and microstructure. Also presented is an analysis of the role of microstructure in the fundamental magnetic properties (for example, magnetorestriction or critical behaviour) of crystalline and amorphous alloys. The authors apply the theory of micromagnetism to all aspects of advanced magnetic materials including domain patterns and magnetization processes under the influence of defect structures. Coverage includes modern developments in computational micromagnetism and its application to spin structures of small particles and platelets. It will be of interest to researchers and graduate students in condensed matter, physics, electrical engineering and materials science, as well as to industrial researchers working in the electrotechnical and recording industry.

Describes the properties of magnetic forces, the history of their applications, and the future uses being developed for them.

This easily accessible description charts the historical development of magnetism - dating back some three thousand y ears. Alberto P. Guimaraes starts with the Greeks, with the first records of magnetism, and ends with hard disks and magnetic resonance imaging. Nowadays every electric and electronic device involves the use of magnets, such that magnetic devices, including magnetic media and recording equipment, represent a world market of over 100 billion dollars each year. Enjoyable reading for graduates, physics students, libraries, public libraries, school libraries, those interested in the natural sciences, lay readers, historians of physics.