doi:10.4028/www.scientific.net/SSP.257.139engPalacios, ElíasTomasi, CorradoSaez-Puche, ReginoDos Santos-Garcia, Antonio J.Fernandez-Martinez, FranciscoBurriel, RamónEnhanced magnetocaloric effect by the rare earth polarization due to the exchange with a transition metal. Study of GdCrO4ART-2017-97079The zircon polymorph of GdCrO4 has a large magnetocaloric effect over a wide temperature range, with |¿ST| > 20 J/kg·K from 6 K to 34 K, for a magnetic field of 9 T. This unusual behaviour is very interesting on magnetic refrigeration applications, for liquefying H2 or natural gas. The mean-field approach explains that it is due to the weaker Gd-Cr magnetic exchange relative to the Cr-Cr one, while the Gd-Gd exchange is negligible. This possibility has not been sufficiently studied and opens an interesting strategy to design more efficient materials for magnetic refrigeration.2017http://zaguan.unizar.es/record/7910610.4028/www.scientific.net/SSP.257.139http://zaguan.unizar.es/record/79106oai:zaguan.unizar.es:79106SOLID STATE PHENOMENA 257 (2017), 139-142 [4 pp.]All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess