Loading patent…
AssigneeKabushiki Kaisha Toshiba
InventorsKazuaki Fukamichi, Asaya Fujita, Yoshiaki Iijima, Akiko Saito, Tadahiko Kobayashi, Masashi Sahashi
Estimating the term…
The magnetic material for magnetic refrigeration according to the present invention has an NaZn13-type crystalline structure and comprises iron (Fe) as a principal element (more specifically, Fe is substituted for the position of “Zn”) and hydrogen (H) in an amount of 2 to 18 atomic % based on all constitutional elements. Preferably, the magnetic material for magnetic refrigeration preferably contains 61 to 87 atomic % of Fe, 4 to 18 atomic % of a total amount of Si and Al, 5 to 7 atomic % of La. The magnetic material for magnetic refrigeration exhibits a large entropy change in a room temperature region and no thermal hysteresis in a magnetic phase transition. Therefore, when a magnetic refrigeration cycle is configured using the magnetic material for magnetic refrigeration, a stable operation can be performed.
A magnetic material for magnetic refrigeration having an NaZn13-type crystalline structure and comprising iron (Fe) as a principal element and hydrogen (H) in an amount of 2 to 18 atomic % based on all constitutional elements, wherein Fe is contained in an amount of 61 to 87 atomic %;
Dependencies are inferred from the claim text.