| abstract |
PROBLEM TO BE SOLVED: To provide a magnetic refrigeration work substance and a magnetic cooling system not only for home appliances such as a refrigerator and a freezer near room temperature but also for a refrigeration technology supporting a gas liquefaction industry, a superconducting device and the like. In the present invention, NaZn 13 type La (Fe x Si 1-x ) 13 H y , which is a magnetic refrigeration working material. In the partial substitution of Ce, it is possible to obtain a magnetic refrigeration working substance, characterized in that it has the composition as NaZn 13 type La 1-z Ce z (Fe x Si 1-x) 13 H y to absorb H . The magnetic refrigeration performing the magnetic refrigerant material NaZn 13 type NaZn 13 type La 1-z Ce z (Fe x Si 1-x) 13 H y one type or cooling control using a plurality of obtained by changing its composition A scheme can be obtained. [Selection] Figure 6 |