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In one example, Prof. Karl A. Gschneidner, Jr. unveiled a [[proof of concept]] magnetic refrigerator near room temperature on February 20, 1997. He also announced the discovery of the GMCE in Gd<sub>5</sub>Si<sub>2</sub>Ge<sub>2</sub> on June 9, 1997 <ref>{{cite web|url=http://prola.aps.org/abstract/PRL/v78/i23/p4494_1 |title=Phys. Rev. Lett. 78, 4494 (1997): Giant Magnetocaloric Effect in Gd_{5}(Si_{2}Ge_{2}) |publisher=Prola.aps.org |date= |accessdate=2012-10-04}}</ref> (see below). Since then, hundreds of peer-reviewed articles have been written describing materials exhibiting magnetocaloric effects.
In early 2014, General Electric demonstrated a 50-stage magnetocaloric refrigerator prototype: http://www.theverge.com/2014/2/10/5398602/GE-magnetic-refrigeration-prototype
==See also==
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