11. Ferromagnetic materials owe their properties to an enormous number of embedded tiny magnets, called domains.12. A familiar example of SSB is in ferromagnetic materials . 13. Think about a permanent magnet and a chunk of ferromagnetic material ( like iron ). 14. Computing the magnetic field and force exerted by ferromagnetic materials is difficult for two reasons. 15. But in a ferromagnetic material , all the atomic moments are aligned even without an external field. 16. A modern HDD records data by magnetizing a thin film of ferromagnetic material on a disk. 17. It turned out, for example, that small clusters of a ferromagnetic material are super-paramagnetic rather than ferromagnetic. 18. Even an iron ( " soft " ferromagnetic material ) nail can retain a bit of the magnetization. 19. The magnetic moments of atoms in a ferromagnetic material cause them to behave something like tiny permanent magnets. 20. This can result in ferromagnetic materials having no spontaneous magnetism as domains could potentially balance each other out.
