This edition provides minor updates to outdated topics and includes substantial updates to the last 4 chapters due to major changes in applications and technologies in the 15 years since publication. Updated topics include soft magnetic materials, hard magnetic materials, magnetic storage of data and magnetic evaluation of materials. Information on magneto-transport, small particles, nanomagnetism, magnetic semiconductors, spintronics and high-frequency magnetism has been added. Each chapter also features updated and new homework problems, and there is an updated solutions manual.