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A neodymium magnet (also known as NdFeB, NIB or Neo magnet) is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd 2 Fe 14 B tetragonal crystalline structure. [1] They are the most widely used type of rare-earth magnet .
Magnetic induction B (also known as magnetic flux density) has the SI unit tesla [T or Wb/m 2]. [1] One tesla is equal to 10 4 gauss. Magnetic field drops off as the inverse cube of the distance ( 1 / distance 3 ) from a dipole source. Energy required to produce laboratory magnetic fields increases with the square of magnetic field. [2]
A magnet's magnetic moment (also called magnetic dipole moment and usually denoted μ) is a vector that characterizes the magnet's overall magnetic properties. For a bar magnet, the direction of the magnetic moment points from the magnet's south pole to its north pole, [ 15 ] and the magnitude relates to how strong and how far apart these poles ...
On May 24, 2024, the Biden Administration announced a 25 percent tariff on rare earth magnets from China, set to take effect in 2026. This marks the first time that critical minerals, including rare earth magnets, have been specifically included in the tariffs. [53] Following the tariffs MP Materials put out a statement listing the tariffs.
The lab develops technology, methodology, and applications at high magnetic fields through both in-house and external user activities. An in-house made 900 MHz (21.1 Tesla) NMR magnet has an ultra-wide bore measuring 105 mm (about 4 inches) in diameter, this superconducting magnet has the highest field for MRI study of a living animals. [15]
The adhesive's grip was strong enough to hold papers together, but weak enough to allow the papers to be pulled apart again without being torn. It could also be used again and again. The adhesive, acrylate copolymer microspheres, was patented in 1972 and described as suitable for use as a spray.
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