Magnetic materials

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Learn more about Magnetic Materials

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Magnetic materials

  1. 3. <ul><li>Figure 1b: Brass bound lodestone, ferrite block and NdFeB magnet: each store the same magnetic energy(~0.4J) & contain ~70% iron by weight, yet the mass has decreased a thousand fold. </li></ul>
  2. 4. What is Magnetic Field...?
  3. 5. Magnetism
  4. 6. History of Magnetism
  5. 9. Magnetic field loops around a current carrying wire
  6. 20. Origin of domains
  7. 22. Schematic representation of a 180º domain wall
  8. 30. Applications
  9. 32. Structure of ferrites
  10. 33. Applications of Ferrites <ul><li>Ferrite cores are used in electronic inductors , </li></ul><ul><li>transformers and electromagnets. </li></ul><ul><li>Low eddy current loss and hysteresis loss, they are used in two port devices – circulator, </li></ul><ul><li>isolator. </li></ul><ul><li>Audio and video transformers </li></ul><ul><li>Produce ultrasonics </li></ul><ul><li>Microwave frequency applications </li></ul>
  11. 46. Queries…?
  12. 47. Thank you for your patience

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