期刊
CERAMICS INTERNATIONAL
卷 47, 期 5, 页码 6290-6297出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.10.207
关键词
Magneto-caloric effect (MCE); B-site disordered double perovskite; Magnetic properties; Magneto-caloric performances
资金
- National Natural Science Foundation of China [52071197]
- Science and Technology Committee of Shanghai [19ZR1418300]
- Independent Research and Development Project of State Key Laboratory of Advanced Special Steel, Shanghai University [SKLASS 2019-Z003]
- Science and Technology Commission of Shanghai Municipality [19DZ2270200]
- Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University [SKLASS 2019-Z003]
The RE2FeAlO6 oxides have large magneto-caloric effects, with Gd2FeAlO6 showing promising performance for cryogenic magnetic refrigeration.
In this study, we present the crystal structure, magnetic properties, and cryogenic magneto-caloric effect (MCE) of RE2FeAlO6 (RE = Gd, Dy, Ho) oxides. The XRD refinement analysis suggests that all the RE2FeAlO6 oxides are crystallized in B-site disordered orthorhombic structure. The RE2FeAlO6 oxides exhibit large MCEs around TC. The peak magnetic entropy change (-Delta S-M) and refrigeration capacity (RC) are 25.9 J/(kgK) and 240.1 J/kg for Gd2FeAlO6, 10.7 J/(kgK) and 274.9 J/kg for Dy2FeAlO6, 9.6 J/(kgK) and 249.6 J/kg for Ho2FeAlO6 under AH of 0-70 kOe, respectively. Notably, Gd2FeAlO6 exhibits promising magneto-caloric performance and therefore is a favorable candidate for cryogenic magnetic refrigeration.
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