Magnetism II-Materials and Applications

Magnetic materials and their applications 15 Permanent magnets - M. Rossignol, J. P. Yonnet 16 Soft materials for electrical engineering and low frequency electronics - o. Geoffroy, J. L Porteseil 17 Soft materials for high frequency electronics - J. e. Peuzin 18 Magnetostrictive materials - E. du Tremolet de Lacheisserie 19 Superconductivity - M. Cyrot 20 Magnetic thin films and multilayers - B. Dieny 21 Principles of magnetic recording - J. e. Peuzin 22 Ferrofluids - P. Molho Other aspects of magnetism 23 Magnetic resonance imaging - M. Decorps, e. Segebarth 24 Magnetism of earth materials and geomagnetism - P. Rochette, I. Hedley 25 Magnetism and the Life Sciences - E. du Tremolet de Lacheisserie, P. Rochette 26 Practical magnetism and instrumentation - Ph. Lethuillier Appendices Symbols used in the text 2 Units and universal constants 3 Periodic table of the elements 4 Magnetic susceptibilities 5 Ferromagnetic materials 6 Economic aspects of magnetic materials - J. Laforest S AND THEIR APPUCATIONS 15 - Permanent magnets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 I . Implementation of magnets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 1. The two hysteresis loops of a material: magnetization loop M(H) and induction loop B(H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 2. Operation of an ideal permanent magnet within a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 2. 1. Load line and working point of a magnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .