| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method for large magnetocaloric material, and to provide a large magnetocaloric material produced by this method.SOLUTION: The production method for large magnetocaloric material where ferromagnetism and feeble magnetism coexist in alternate atomic layers or at clear positions of whole material comprises: (a) a step of selecting 50 atom% or more of at least one kind of magnetic ions from Cr and Mn, Fe, Co, Ni; (b) a step of selecting less than 50 atom% of at least one kind of stabilization chemical element which is selected from P, As, Sb, Bi, Si, Ge, Sn, B, Al, Ga, In, Se; (c) a step of performing electronic structural calculation of a material thus selected; and (d) a step of determining whether or not a ferromagnetic ion which loses the magnetic order only at the Curie temperature and a feeble magnetic or meta-magnetic ion which loses at least 80% of magnetic moment at a temperature higher than the Curie temperature coexist in the alternate atomic layers of the material or on the clear positions of the whole material. |
