noun. The phenomenon whereby certain substances can become permanent magnets when subjected to a magnetic field.

noun. phenomenon exhibited by materials like iron (nickel or cobalt) that become magnetized in a magnetic field and retain their magnetism when the field is removed

"However, in ferromagnetism, which is many times stronger, they are aligned collectively, which makes the understanding of the physics much more difficult."

antiferromagnetism  ferrimagnetism  ferromagnetic  

magnetic attraction  magnetic force  magnetism  

electromagnetism  magnetism  

NV  delocalization  farmhands  ferromagnet  flashover