Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 9, Issue 21, Pages 6754-6759Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tc01789f
Keywords
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Funding
- Science, Technology and Innovation Commission of Shenzhen Municipality [JCYJ20190808152217447, JCYJ20180305125212075, JCYJ20180507182246321]
- National Natural Science Foundation of China [51925804]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
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The study reveals that the distorted double-perovskite Gd2ZnTiO6 shows promising magnetocaloric properties as a potential refrigerant material for the liquefaction of helium, with significant magnetic entropy change and cooling power compared to traditional refrigerants.
Herein, we report on the magnetic and magnetocaloric properties of a distorted double-perovskite, Gd2ZnTiO6, through static magnetization and heat capacity measurements, and mean-field analysis. The most pronounced isothermal magnetic entropy change -Delta S-M, and relative cooling power RCP are found to be 53.5 J K-1 kg(-1) and 620.6 J kg(-1), respectively, under a field change of 9 T at 3.1 K with a large adiabatic temperature change T-ad of 23.7 K, far exceeding the commercial cryo-coolant Gd3Ga5O12 (GGG). The results suggest that Gd2ZnTiO6 is a potential working refrigerant material for the targeted liquefaction of helium.
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