Book contents
- Frontmatter
- Contents
- Selected Tables of Numerical Data
- Figure and Table Credits
- Preface to the Second Edition
- Preface to the First Edition
- 1Introduction
- 2Magnetostatics
- 3Magnetism of Electrons
- 4Magnetism of Localized Electrons on the Atom
- 5Ferromagnetism and Exchange
- 6Antiferromagnetism and Other Magnetic Order
- 7Micromagnetism, Domains and Hysteresis
- 8Nanoscale Magnetism
- 9Magnetic Resonance and Spin Dynamics
- 10Magnetotransport and Topology
- 11Experimental Methods
- 12Magnetic Materials
- 13Applications of Soft Magnets
- 14Applications of Hard Magnets
- 15Spin Electronics and Magnetic Recording
- 16Special Topics
- Appendices
- References
- Formula Index
- The magnetic periodic table
- The magnetic periodic table
- Index
2 - Magnetostatics
Published online by Cambridge University Press: 29 May 2026
Book contents
- Frontmatter
- Contents
- Selected Tables of Numerical Data
- Figure and Table Credits
- Preface to the Second Edition
- Preface to the First Edition
- 1Introduction
- 2Magnetostatics
- 3Magnetism of Electrons
- 4Magnetism of Localized Electrons on the Atom
- 5Ferromagnetism and Exchange
- 6Antiferromagnetism and Other Magnetic Order
- 7Micromagnetism, Domains and Hysteresis
- 8Nanoscale Magnetism
- 9Magnetic Resonance and Spin Dynamics
- 10Magnetotransport and Topology
- 11Experimental Methods
- 12Magnetic Materials
- 13Applications of Soft Magnets
- 14Applications of Hard Magnets
- 15Spin Electronics and Magnetic Recording
- 16Special Topics
- Appendices
- References
- Formula Index
- The magnetic periodic table
- The magnetic periodic table
- Index
Summary
The dipole moment is the elementary magnetic quantity, and magnetization is its mesoscopic volume average. The primary magnetic field B is related to the auxiliary magnetic field H. Sources of magnetic field are electric currents and magnetized material. The field produced by a given distribution of magnetization can be calculated by integrating the dipole field due to each volume element, or by using the equivalent distributions of electric currents or magnetic charge. Internal, external and demagnetizing fields are distinguished. The internal field may be defined on a mesoscopic or a macroscopic scale. Magnetic forces and energies are related to magnetization and externally applied field, and force densities to derivatives of the thermodynamic free energy.
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- Magnetism and Magnetic Materials , pp. 26 - 64Publisher: Cambridge University PressPrint publication year: 2026
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