Permanentmagnetin
Permanentmagnetin is a term used in German to describe the phenomenon of permanent magnetism. Permanent magnets are objects made from a material that is magnetized and creates its own persistent magnetic field. This magnetic field exists without the need for an external magnetic field or an electric current. The magnetic properties arise from the alignment of magnetic domains within the material. These domains are microscopic regions where the magnetic moments of atoms are aligned. In a permanent magnet, these domains are largely oriented in the same direction, resulting in a net magnetic field. The strength and permanence of the magnetism depend on the material composition and how it is manufactured. Common materials include alloys of iron, nickel, and cobalt, as well as rare-earth elements like neodymium and samarium. Permanent magnets are ubiquitous in modern technology, found in electric motors, generators, loudspeakers, magnetic storage devices, and magnetic resonance imaging (MRI) machines. The term "Permanentmagnetin" specifically refers to the inherent ability of these materials to retain their magnetism over long periods.