A simplified mean‐field calculation of the magnetic entropy change for the Ising‐like rare‐earth magnets DyAlO3 and Dy3Al5O12 is performed, showing DyAlO3 to be a more promising working material for the 4.2–20 K range Carnot‐type magnetic refrigerators than the conventional refrigerant Dy3Al5O12.
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© 1993 American Institute of Physics.
1993
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