Magnetism
Module Summary
Aims of Module
- To give students a thorough grounding in the fundamental aspects of magnetism
- To inform students of the relevance of magnetism to the modern world (done via discussion of the applications of magnetism to key areas of technology)
Syllabus Outline
- Fundamental Magnetism: Survey of magnetism; quantised angular momentum and vector atom; g-factor (spin-orbit coupling); quantum theory of paramagnetism; ferromagnetism; antiferromagnetism and ferrimagnetism
- Technological Magnetism: Hysteresis and associated properties; demagnetising fields and factors; single domain concept and Stoner-Wohlfarth theory
- Elementary principles of magnetic recording; recording media. Magnetic storage devices
- Permanent magnets and their design; permanent magnet materials and origins of magnetic hardness
- Types, structure and technical applications of ferrimagnetic oxide materials
- Theory of domain structures and domain walls: experimental observation
Indicative Texts and Learning Materials
- J Crangle, 'Solid State Magnetism', Edward Arnold, 1991
- JP Jakubovics, 'Magnetism and Magnetic Materials', Institute of Metals, 1994
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