What is it about?
By utilizing caloric effects of ferromagnetic transitions at low temperatures, an efficient cooling technology down to cryogenic temperature (20 K or -253 degree Celsius; target for liquefied hydrogen storage) is attained.
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Why is it important?
Magnetic cooling temperature range is tunable by adjusting the materials’ composition with different magnetic transition point (Curie temperature). The 20 K refrigerator finds potential application for liquefied hydrogen storage that can contribute to green energy technology.
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This page is a summary of: Change in the character of magnetocaloric effect with Ni substitution in Ho(Co1−Ni )2, Journal of Magnetism and Magnetic Materials, September 2004, Elsevier,
DOI: 10.1016/j.jmmm.2004.02.026.
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