Permanent Magnets

Electromagnets: These magnets are created by passing electric current through a coil of wire and can be turned on or off depending on whether electricity is flowing through them or not.

Magnetic Domains: These small regions within a material consist of aligned atomic or molecular magnets that contribute to its overall magnetization.

Curie Temperature: This is the temperature at which certain materials lose their permanent magnetism due to thermal energy disrupting the alignment of their atomic or molecular magnets.