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Spin glass models can present these amorphous types of magnetism. [2] Due to random frustration, amorphous magnets possess many nearly degenerate ground states. [1] The terms for the amorphous magnetic phases were coined by Michael Coey in 1970s. [2] [3] [4] The Greek root spero/speri (Greek: διασπειρω, romanized: diaspeiro) means 'to ...
An amorphous metal (also known as metallic glass, glassy metal, or shiny metal) is a solid metallic material, usually an alloy, with disordered atomic-scale structure. Most metals are crystalline in their solid state, which means they have a highly ordered arrangement of atoms. Amorphous metals are non-crystalline, and have a glass-like structure.
Another class of design is the magnetic mangle (B), proposed by Coey and Cugat, [20] [21] in which uniformly magnetized rods are arranged such that their magnetization matches that of a Halbach cylinder, as shown for a 6-rod design. This design greatly increases access to the region of uniform field, at the expense of the volume of uniform ...
Magnets can be used to make jewelry. Necklaces and bracelets can have a magnetic clasp, or may be constructed entirely from a linked series of magnets and ferrous beads. Magnets can pick up magnetic items (iron nails, staples, tacks, paper clips) that are either too small, too hard to reach, or too thin for fingers to hold.
Jewellery design is the art or profession of designing and creating jewellery. It is one of civilization's earliest forms of decoration , dating back at least 7,000 years to the oldest-known human societies in Indus Valley Civilization , Mesopotamia , and Egypt .
Ferrite magnets are known for their high magnetic permeability and low electrical conductivity, making them suitable for high-frequency applications. [38] In electric power steering systems, they provide the necessary magnetic field for efficient motor operation, contributing to the system's overall performance and reliability. [ 39 ]
Permanent magnets are made from hard ferromagnetic materials (such as alnico) and ferrimagnetic materials (such as ferrite) that are subjected to special processing in a strong magnetic field during manufacturing to align their internal microcrystalline structure, making them difficult to demagnetize. To demagnetize a saturated magnet, a ...
The Czochralski method, also Czochralski technique or Czochralski process, is a method of crystal growth used to obtain single crystals of semiconductors (e.g. silicon, germanium and gallium arsenide), metals (e.g. palladium, platinum, silver, gold), salts and synthetic gemstones.
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