4 ms·

Magnetic Refrigeration

• peter_d_sherman 2y ago
  >"A magnetocaloric material warms up when a magnetic field is applied. [...] When the magnetic field is removed, the material returns to its original state, reabsorbing the heat, and returning to original temperature. To achieve refrigeration, the material is allowed to radiate away its heat while in the magnetized hot state. Removing the magnetism, the material then cools to below its original temperature." Related: Magnetocaloric Materials and Their Applications: https://www.quadrant.us/blog/1727.html https://www.quadrant.us/blog/1727.html Heusler compound https://en.wikipedia.org/wiki/Heusler_compound https://en.wikipedia.org/wiki/Heusler_compound >"Heusler compounds are magnetic intermetallics with face-centered cubic crystal structure and a composition of XYZ (half-Heuslers) or X2YZ (full-Heuslers), where X and Y are transition metals and Z is in the p-block." [...] >"Many of these compounds exhibit properties relevant to spintronics, such as magnetoresistance, variations of the Hall effect, ferro-, antiferro-, and ferrimagnetism, half- and semimetallicity, semiconductivity with spin filter ability, superconductivity, topological band structure and are actively studied as thermoelectric materials." Heusler alloys: Past, properties, new alloys, and prospects: https://www.sciencedirect.com/science/article/abs/pii/S0079642522000986 https://www.sciencedirect.com/science/article/abs/pii/S00796...