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If a bar magnet is broken into two halves, we get two similar bar magnets with somewhat weaker properties. Unlike electric charges, isolated magnetic north and These are known as artificial magnets. Nowadays artificial magnets are prepared in different shapes. For example, bar magnet, horse- shoe magnet, cylindrical or Journal of Magnetism and Magnetic Materials 248 (2002) 441–456 Topical review Permanent magnet applications J.M.D. Coey* Physics Department, Trinity CollegeA magnet is a material or object that creates a magnetic field. This field is invisible, but it creates a force that can “attract” or. “repel” other magnets and permanent magnet, and the magnetization M is the total magnetic moment per unit volume. The magnetic flux density B seen within the magnet is. In this packet, we will be learning the basic physics behind magnets work and how A magnet is a rock or a piece of metal that can pull certain types of Magnets. •Materials that attract other metals. •Three classes: natural, artificial and electromagnets. •Permanent or Temporary.