Chapter Objectives

1. Briefly describe the two sources for magnetic moments in materials.
2. Describe magnetic hysteresis for a material.
3. Cite distinctive magnetic characteristics for hard magnetic and soft magnetic material.
4. Describe how increasing the temperature affects the alignment of magnetic dipoles in ferromagnetic material.
5. Describe the nature of paramagnetism.
6. Explain what alnico means.
7. Cite a few industrial applications of soft ferrites.
8. Briefly describe the source of antiferromagnetism.
9. Draw a hysteresis loop of a ferromagnetic material.
10. Describe relative magnetic permeability and magnetic permeability.