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Rare-earth Iron Permanent Magnets
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.
Modern Electrical Drives
Electrical drives lie at the heart of most industrial processes and make a major contribution to the comfort and high quality products we all take for granted. They provide the controller power needed at all levels, from megawatts in cement production to milliwatts in wrist watches. Other examples are legion, from the domestic kitchen to public utilities. The modern electrical drive is a complex item, comprising a controller, a static converter and an electrical motor. Some can be programmed by the user. Some can communicate with other drives. Semiconductor switches have improved, intelligent power modules have been introduced, all of which means that control techniques can be used now that were unimaginable a decade ago. Nor has the motor side stood still: high-energy permanent magnets, semiconductor switched reluctance motors, silicon micromotor technology, and soft magnetic materials produced by powder technology are all revolutionising the industry. But the electric drive is an enabling technology, so the revolution is rippling throughout the whole of industry.
Of Whales and Dinosaurs
Singapore's collection of Southeast Asian animals–one of the world's largest–dates back to the old Raffles Museum, officially established in 1878.With the opening of the Lee Kong Chian Natural History Museum in 2015, the original Raffles Museum has "reincarnated" and the loop on its remarkable 127-year history has closed. Beneath the sleek exterior of today's modern museum building lies a saga of titanic struggles and changes. That the collections survived at all–through the multiple challenges of the nineteenth century, the disruption of World War Two, and its potential disintegration in the face of Singapore's modernization–is nothing short of miraculous. This book is not only an institutional history of the museum but also tells the story of frustrations, commitment and courage of the numerous individuals who battled officialdom, innovated endlessly and overcame the odds to protect Singapore's natural history heritage. The book features 108 historical photographs and natural history illustrations printed in full colour throughout.
Aspects of Modern Magnetism
This book, a collection of works by leading figures in the field, is devoted to the latest developments of modern magnetism including micromagnetism, nanomagnetic materials, magnetic multilayers, macroscopic quantum magnetism, rare-earth intermetallic compounds, giant magnetoresistance, and their applications. Some new concepts and theories are also included for a better understanding of these novel phenomena.This book can be used as an advanced text book on magnetism and materials science for graduate students in physics and materials science departments. It is also useful as a research reference for condensed matter physicists and materials scientists.
