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Magnetism and Magnetic Materials

Book Description

Covering basic physical concepts, experimental methods, and applications, this book is an indispensable text on the fascinating science of magnetism, and an invaluable source of practical reference data. Accessible, authoritative, and assuming undergraduate familiarity with vectors, electromagnetism and quantum mechanics, this textbook is well suited to graduate courses. Emphasis is placed on practical calculations and numerical magnitudes - from nanoscale to astronomical scale - focussing on modern applications, including permanent magnet structures and spin electronic devices. Each self-contained chapter begins with a summary, and ends with exercises and further reading. The book is thoroughly illustrated with over 600 figures to help convey concepts and clearly explain ideas. Easily digestible tables and data sheets provide a wealth of useful information on magnetic properties. The 38 principal magnetic materials, and many more related compounds, are treated in detail.

Table of Contents

  1. Cover
  2. Title
  3. Copyright
  4. Contents
  5. List of tables of numerical data
  6. Preface
  7. Acknowledgements
  8. 1 Introduction
    1. 1.1 A brief history of magnetism
    2. 1.2 Magnetism and hysteresis
    3. 1.3 Magnet applications
    4. 1.4 Magnetism, the felicitous science
  9. 2 Magnetostatics
    1. 2.1 The magnetic dipole moment
    2. 2.2 Magnetic fields
    3. 2.3 Maxwell’s equations
    4. 2.4 Magnetic field calculations
    5. 2.5 Magnetostatic energy and forces
  10. 3 Magnetism of electrons
    1. 3.1 Orbital and spin moments
    2. 3.2 Magnetic field effects
    3. 3.3 Theory of electronic magnetism
    4. 3.4 Magnetism of electrons in solids
  11. 4 Magnetism of localized electrons on the atom
    1. 4.1 The hydrogenic atom and angular momentum
    2. 4.2 The many-electron atom
    3. 4.3 Paramagnetism
    4. 4.4 Ions in solids; crystal-field interactions
  12. 5 Ferromagnetism and exchange
    1. 5.1 Mean field theory
    2. 5.2 Exchange interactions
    3. 5.3 Band magnetism
    4. 5.4 Collective excitations
    5. 5.5 Anisotropy
    6. 5.6 Ferromagnetic phenomena
  13. 6 Antiferromagnetism and other magnetic order
    1. 6.1 Molecular field theory of antiferromagnetism
    2. 6.2 Ferrimagnets
    3. 6.3 Frustration
    4. 6.4 Amorphous magnets
    5. 6.5 Spin glasses
    6. 6.6 Magnetic models
  14. 7 Micromagnetism, domains and hysteresis
    1. 7.1 Micromagnetic energy
    2. 7.2 Domain theory
    3. 7.3 Reversal, pinning and nucleation
  15. 8 Nanoscale magnetism
    1. 8.1 Characteristic length scales
    2. 8.2 Thin films
    3. 8.3 Thin-film heterostructures
    4. 8.4 Wires and needles
    5. 8.5 Small particles
    6. 8.6 Bulk nanostructures
  16. 9 Magnetic resonance
    1. 9.1 Electron paramagnetic resonance
    2. 9.2 Ferromagnetic resonance
    3. 9.3 Nuclear magnetic resonance
    4. 9.4 Other methods
  17. 10 Experimental methods
    1. 10.1 Materials growth
    2. 10.2 Magnetic fields
    3. 10.3 Atomic-scale magnetism
    4. 10.4 Domain-scale measurements
    5. 10.5 Bulk magnetization measurements
    6. 10.6 Excitations
    7. 10.7 Numerical methods
  18. 11 Magnetic materials
    1. 11.1 Introduction
    2. 11.2 Iron group metals and alloys
    3. 11.3 Rare-earth metals and intermetallic compounds
    4. 11.4 Interstitial compounds
    5. 11.5 Oxides with ferromagnetic interactions
    6. 11.6 Oxides with antiferromagnetic interactions
    7. 11.7 Miscellaneous materials
  19. 12 Applications of soft magnets
    1. 12.1 Losses
    2. 12.2 Soft magnetic materials
    3. 12.3 Static applications
    4. 12.4 Low-frequency applications
    5. 12.5 High-frequency applications
  20. 13 Applications of hard magnets
    1. 13.1 Magnetic circuits
    2. 13.2 Permanent magnet materials
    3. 13.3 Static applications
    4. 13.4 Dynamic applications with mechanical recoil
    5. 13.5 Dynamic applications with active recoil
    6. 13.6 Magnetic microsystems
  21. 14 Spin electronics and magnetic recording
    1. 14.1 Spin-polarized currents
    2. 14.2 Materials for spin electronics
    3. 14.3 Magnetic sensors
    4. 14.4 Magnetic memory
    5. 14.5 Other topics
    6. 14.6 Magnetic recording
  22. 15 Special topics
    1. 15.1 Magnetic liquids
    2. 15.2 Magnetoelectrochemistry
    3. 15.3 Magnetic levitation
    4. 15.4 Magnetism in biology and medicine
    5. 15.5 Planetary and cosmic magnetism
  23. Appendices
    1. Appendix A Notation
    2. Appendix B Units and dimensions
    3. Appendix C Vector and trigonometric relations
    4. Appendix D Demagnetizing factors for ellipsoids of revolution
    5. Appendix E Field, magnetization and susceptibility
    6. Appendix F Quantum mechanical operators
    7. Appendix G Reduced magnetization of ferromagnets
    8. Appendix H Crystal field and anisotropy
    9. Appendix I  Magnetic point groups
  24. Formula index
  25. Index