Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 8, Issue 34, Pages 11866-11873Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc02449j
Keywords
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Funding
- Science, Technology and Innovation Commission of Shenzhen Municipality [JCYJ20190808152217447, JCYJ20180305125212075, JCYJ20180507182246321]
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Herein, we report a potential solid-state magnetic cooling candidate gadolinium borotungstate Gd(3)BWO(9)that shows an exceptionally large magnetocaloric effect. Experimental investigations on the crystal structure, bulk magnetic and heat capacity properties down to 300 mK were performed, along with the theoretical analysis of the electronic and magnetic features through density functional theory (DFT) and mean-field approach. The isothermal magnetic entropy change was identified to be 454 mJ K(-1)cc(-1)for a field variation of 9 T at 2.4 K, which are among the highest records ever reported. The substantial magnetocaloric effect makes Gd(3)BWO(9)a strong alternative for cryogenic refrigeration at ultra-low temperatures and in the magnetic gas liquefaction.
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