Magnetism is a very interesting topic to talk about because of magnets. Some of these magnets lose their magnetism over time. This is an essential fact for consumers because it is better to buy a real magnet rather than an artificial one due to the loss of magnetism. There are many different types of magnets in the world today, but an electromagnet is by far the most common. An electromagnet is made up of coils and, when connected to electricity, produces an electrical charge. Electromagnets have the ability to be turned on and off and are much more powerful than regular magnets. The conventional approach involves the use of fields generated by electromagnets, which require large amounts of current, are bulky and severely limit the applications of magnetic materials. Sun and his colleagues pursued a new method known as electric field control, which is potentially more space- and energy-efficient. As part of this research, five years ago Sun began studying a new group of composite materials, known as multiferroic composites. Magnets have been around for hundreds of thousands of years and have been used by many different cultures over this time. A strong and effective magnetic field was produced by an electric field in a layered multiferroic composite, which used a negligible amount of energy. In stark contrast, conventional electromagnets typically require hundreds of watts of power consumption to generate such a magnetic field, Sun said. Effective electric field control of magnetism in magnetic layer structures has significant technological implications,” he said Sun. “Compact, quasi-passive electrical magnetic control of magnetism could lead to more compact wireless communication systems and radar systems with significantly reduced power consumption and longer battery life. It could also lead to new magnetic random access memory devices and other new spintronic devices. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Magnetism is a class of physical phenomena mediated by magnetic fields. The electric currents and magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. The most familiar effects occur in ferromagnetic materials, which are strongly attracted to magnetic fields and can be magnetized to become permanent magnets, themselves producing magnetic fields. Only a few substances are ferromagnetic; the most common are iron, nickel, cobalt and their alloys. The prefix ferro- refers to iron, because permanent magnetism was first observed in the lodestone, a form of natural iron ore called magnetite, Fe3O4. Magnets have been useful over the years because they can hold two things together simply through the strength of the metal in the magnet. all other materials are affected to some extent by a magnetic field, by several other types of magnetism. Paramagnetic substances such as aluminum and oxygen are weakly attracted to an applied magnetic field; diamagnetic substances such as copper and carbon are weakly repelled; while antiferromagnetic materials such as chromium and spin glasses have a more complex relationship with a magnetic field. The force of a magnet on paramagnetic, diamagnetic and antiferromagnetic materials is usually too weak to be felt and can only be detected by laboratory instruments, so in everyday life these substances are often described as non-magnetic. The state.