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The first accounts of magnetism date back to the ancient Greeks who also gave magnetism its name. It derives from Magnesia, a Greek town and province in Asia Minor, the etymological origin of the word “magnet” meaning “the stone from Magnesia.” This stone consisted of magnetite (Fe3O4) and it was known that a piece of iron would become magnetized when rubbed with it.More serious efforts to use the power hidden in magnetic materials were made only much later. For instance, in the 18th century smaller pieces of magnetic materials were combined into a larger magnet body that was found to have quite a substantial lifting power. Progress in magnetism was made after Oersted discovered in 1820 that a magnetic field could be generated with an electric current. Sturgeon successfully used this knowledge to produce the first electromagnet in 1825. Although many famous scientists tackled the phenomenon of magnetism from the theoretical side (Gauss, Maxwell, and Faraday) it is mainly 20th century physicists who must take the credit for giving a proper description of magnetic materials and for laying the foundations of modem technology. Curie and Weiss succeeded in clarifying the phenomenon of spontaneous magnetization and its temperature dependence. The existence of magnetic domains was postulated by Weiss to explain how a material could be magnetized and nevertheless have a net magnetization of zero. The properties of the walls of such magnetic domains were studied in detail by Bloch, Landau, and Néel.
Content:-
Chapter 1. Introduction
Chapter 2. The Origin of Atomic Moments
Chapter 3. Paramagnetism of Free Ions
Chapter 4. The Magnetically Ordered State
Chapter 5. Crystal Fields
Chapter 6. Diamagnetism
Chapter 7. Itinerant-Electron Magnetism
Chapter 8. Some Basic Concepts and Units
Chapter 9. Measurement Techniques
Chapter 10. Caloric Effects in Magnetic Materials
Chapter 11. Magnetic Anisotropy
Chapter 12. Permanent Magnets
Chapter 13. High-Density Recording Materials
Chapter 14. Soft-Magnetic Materials
Chapter 15. Invar Alloys
Chapter 16. Magnetostrictive Materials
Author Index
Subject Index
Author Details
"K. H. J. Buschow"
Van der Waals-Zeeman Instituut
Universiteit van Amsterdam
Amsterdam, The Netherlands
"F. R. de Boer"
Van der Waals-Zeeman Instituut
Universiteit van Amsterdam
Amsterdam, The Netherlands
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