Final answer:
Domains in a magnet are regions where electrons' magnetic fields align with each other. Permanent magnets have a magnetic field around them due to the alignment of these domains. A diagram of magnetic domains in a magnet can be found online or in a physics textbook.
Step-by-step explanation:
Domains of a Magnet
In ferromagnetic materials such as iron, domains are regions where the electrons' magnetic fields align with each other. The atoms within each domain are grouped together so that their magnetic fields point the same way. In an unmagnetized sample, the domains are randomly oriented. However, when an external magnetic field is applied, the domains align somewhat with the field, resulting in a magnetized material.
Magnetic Field of Permanent Magnets
Permanent magnets have a magnetic field around them due to the alignment of the magnetic domains. The aligned domains create a net magnetic field that extends beyond the physical boundaries of the magnet. This magnetic field can attract or repel other magnetic objects or interact with an external magnetic field.
Neat Diagram
Unfortunately, I cannot provide a visual diagram in this text-based format. However, you can easily find diagrams of magnetic domains of a magnet by searching online or referring to a physics textbook.