Iowa State University Research Foundation, Inc.

Yaroslav Mudryk

Vitalij K Pecharsky

Arjun K Pathak

Viktor Balema

Oleksandr Dolotko

Anis Biswas

Henrique Neves Bez

Nikolai A Zarkevich

A magnetocaloric material comprising a La—Fe—Si based alloy composition that is compositionally modified to include a small but effective amount of at least one of Al, Ga, and In to improve mechanical stability of the alloy (substantially reduce alloy brittleness), improve thermal conductivity, and preserve comparable or provide improved magnetocaloric effects. The alloy composition may be further modified by inclusion of at least one of Co, Mn, Cr, and V as well as interstitial hydrogen.

Modified La—Fe—Si magnetocaloric alloys

A method is provided of making a magnetocaloric alloy composition comprising Ni, Co, Mn, and Ti, which preferably includes certain beneficial substitutional elements, by melting the composition and rapidly solidifying the melted composition at a cooling rate of at least 100 K/second (Kelvin/second) to improve a magnetocaloric property of the composition. The rapidly solidified composition can be heat treated to homogenize the composition and annealed to tune the magneto-structural transition for use in a regenerator.

Highly tunable, inexpensive and easily fabricated magnetocaloric materials

A magnetocaloric material comprising a La&#x2014;Fe&#x2014;Si based alloy composition that is compositionally modified to include a small but effective amount of at least one of Al, Ga, and In to improve mechanical stability of the alloy (substantially reduce alloy brittleness), improve thermal conductivity, and preserve comparable or provide improved magnetocaloric effects. The alloy composition may be further modified by inclusion of at least one of Co, Mn, Cr, and V as well as interstitial hydrogen.

Modified La&#x2014;Fe&#x2014;Si magnetocaloric alloys

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Ames, IA, United States of America

Yaroslav Mudryk