%0 Journal Article %1 Tegus2002 %A Tegus, O. %A Bruck, E. %A Buschow, K. H. J. %A de Boer, F. R. %D 2002 %J Nature %K 2002 entropy heat-transfer magnetism refrigeration %N 6868 %P 150--152 %T Transition-metal-based magnetic refrigerants for room-temperature applications %U http://dx.doi.org/10.1038/415150a %V 415 %X heat transfer. If the magnetic field is subsequently turned off, the magnetic moments randomize again, which leads to cooling of the material below the ambient temperature. Here we report the discovery of a large magnetic entropy change in MnFeP0.45As0.55, a material that has a Curie temperature of about 300 K and which allows magnetic refrigeration at room temperature. The magnetic entropy changes reach values of 14.5 J K-1 kg-1 and 18 J K-1 kg-1 for field changes of 2 T and 5 T, respectively. The so-called giant-MCE material Gd5Ge2Si2 (ref. 2) displays similar entropy changes, but can only be used below room temperature. The refrigerant capacity of our material is also significantly greater than that of Gd (ref. 3). The large entropy change is attributed to a field-induced first-order phase transition enhancing the effect of the applied magnetic field.

@article{Tegus2002, abstract = {heat transfer. If the magnetic field is subsequently turned off, the magnetic moments randomize again, which leads to cooling of the material below the ambient temperature. Here we report the discovery of a large magnetic entropy change in MnFeP0.45As0.55, a material that has a Curie temperature of about 300 K and which allows magnetic refrigeration at room temperature. The magnetic entropy changes reach values of 14.5 J K-1 kg-1 and 18 J K-1 kg-1 for field changes of 2 T and 5 T, respectively. The so-called giant-MCE material Gd5Ge2Si2 (ref. 2) displays similar entropy changes, but can only be used below room temperature. The refrigerant capacity of our material is also significantly greater than that of Gd (ref. 3). The large entropy change is attributed to a field-induced first-order phase transition enhancing the effect of the applied magnetic field. }, added-at = {2011-01-21T14:59:49.000+0100}, author = {Tegus, O. and Bruck, E. and Buschow, K. H. J. and de Boer, F. R.}, biburl = {https://www.bibsonomy.org/bibtex/216eb035c0cf53f29e84f4c422f7bacdc/thorade}, comment = {10.1038/415150a}, description = {Transition-metal-based magnetic refrigerants for room-temperature applications : Article : Nature}, interhash = {57516b2dd159b233009cdfc5ecc1b28d}, intrahash = {16eb035c0cf53f29e84f4c422f7bacdc}, issn = {00280836}, journal = {Nature}, keywords = {2002 entropy heat-transfer magnetism refrigeration}, month = {01}, number = 6868, pages = {150--152}, timestamp = {2011-01-21T14:59:49.000+0100}, title = {Transition-metal-based magnetic refrigerants for room-temperature applications}, url = {http://dx.doi.org/10.1038/415150a}, volume = 415, year = 2002 }