Explain/describe how atoms in domains determine
whether a material is magnetic or not.
Atoms in a material can align themselves in such a way that creates magnetic properties. This alignment of atoms is known as a magnetic domain. In a material with domains, the magnetic moments of the atoms within each domain will all point in the same direction, creating a net magnetic field.
If all the domains in a material are aligned in the same direction, the material will exhibit macroscopic magnetic properties and be considered a magnet. However, if the domains in the material are randomly aligned or cancel each other out, then the material will not exhibit magnetic properties.
The size and orientation of the domains, as well as the interactions between neighboring domains, all play a role in determining whether a material is magnetic or not. Additionally, external factors such as temperature and applied magnetic fields can also affect the alignment of the domains and the overall magnetic behavior of the material.