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We report 5.5^∘{}K cooling at 20^∘{}K in the ferrimagnet ytterbium iron garnet accompanying an increase of magnetic field. The cooling abruptly ceases at the phase boundary between a collinear and canted sublattice configuration. A cooling of 10^∘{}K at 18^∘{}K and 3.7 ^∘{}K at 6^∘{}K was observed in dilute ytterbium iron garnet.
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Clark et al. (1969) studied this question.
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