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Creators/Authors contains: "Martinez, Maya H"

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  1. ; ; ; (, Physical Review Applied)
    The adiabatic elastocaloric effect relates changes in the strain that a material experiences to resulting changes in its temperature. While elastocaloric materials have been utilized for cooling in room-temperature applications, the use of such materials for cryogenic cooling remains relatively unexplored. Here, we use a strain load-unload technique at low temperatures, similar to those employed at room temperature, to demonstrate a large cooling effect in Tm⁢VO4. For strain changes of 1.8 ×10−3, the inferred cooling reaches approximately 50% of the material’s starting temperature at 5 K, justifying the moniker “giant.” Beyond establishing the suitability of this class of material for cryogenic elastocaloric cooling, these measurements also provide additional insight into the entropy landscape in the material as a function of strain and temperature, including the behavior proximate to the quadrupolar phase transition. 
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    Free, publicly-accessible full text available January 1, 2026