Magnetic Materials With Permanent Magnetism Or Induced Magnetic Moments Can Be Magnetized Easily When Magnetic Fields Are Applied

Magnetic Materials
Magnetic Materials

The term "magnetic" refers to a variety of substances that are drawn to magnets. The following list of magnetic elements and minerals includes those that can be magnetised to produce permanent magnets: There are two types of magnetic materials: magnetically hard and magnetically soft. Soft Magnetic Materials are easily magnetised, but the magnetism that results is typically transient. For instance, if you run a screwdriver or nail along a permanent magnet, the screwdriver or nail will become momentarily magnetised and will emit its own faint magnetic field. This is as a result of the external magnetic field temporarily aligning a significant portion of their iron atoms in the same direction.

A powerful external magnetic field, such as those produced by an electromagnet, can magnetise magnetically hard materials in the same way as magnetically soft materials can. The distinction is that magnetically hard materials won't become demagnetized by an opposing magnetic field, heated past their curie temperature, or allowed to corrode. Instead, they will stay magnetised eternally. Permanent magnets are created from alloys often including variable proportions of iron, aluminium, nickel, cobalt, and the rare earth elements samarium, dysprosium, and neodymium. These materials are utilised to generate magnetically hard objects. Neodymium magnets, which are the strongest Magnetic Materials Market, are created from an alloy of neodymium, iron, and boron. Since their atomic magnetic domains are more difficult to align than those of magnetically soft materials, permanent magnets are difficult to magnetise, but once aligned, they become highly magnetic.

Greater use of nanofabrication (thin films, phase separation) to engineer new features and devices will be made of Magnetic Materials in the near future. In the developing field of spin-tronics, where spin-dependent transport processes have the potential to replace semiconductors in some microelectronic applications, several of these novel magnetic material technologies will merge.

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