Patent ID: 9383125
Filing Date: 2016-07-05
CPC Classification: C22C,F25B,H01F

Claim Text:
1. A magnetic refrigeration device, comprising: a heat regenerator; and a magnetic material filled in the heat regenerator, comprising: a composition represented by a general formula: wherein R is at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y, X is at least one element selected from the group consisting of Ti, Zr and Hf, x is a value satisfying 4≦x≦20 atomic %, y is a value, which is atomic ratio, satisfying 0.01≦y≦0.9, and a crystalline structure having a Th wherein a refrigeration cycle of the magnetic refrigeration device is performed by using a magnetic entropy change associated with a second order magnetic phase transition of the magnetic material.