1. Crystal structure, magnetic properties, and magnetocaloric effect in B-site disordered RE2CrMnO6 (RE = Ho and Er) perovskites.
- Author
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Wu, Bingbing, Guo, Dan, Wang, Yaming, and Zhang, Yikun
- Subjects
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MAGNETOCALORIC effects , *MAGNETIC properties , *CRYSTAL structure , *MANGANESE alloys , *MAGNETIC entropy , *MAGNETIC fields , *MAGNETIC cooling - Abstract
In this work, polycrystalline oxides viz., Ho 2 CrMnO 6 (HCMO) and Er 2 CrMnO 6 (ECMO), were prepared using the sol-gel process, and their crystal structure, magnetic properties, and magnetocaloric effects (MCEs) were studied. X-ray refinement results demonstrate that both oxides exhibited the B -site disordered perovskite type structure (Pbnm space group). A ferromagnetic-paramagnetic phase transition as well as large reversible MCEs was also observed at Curie temperatures (T C) of ~6.1 and ~5.2 K for HCMO and ECMO, respectively. For a magnetic field change (ΔH) of 0–7 T, the maximum magnetic entropy change (-Δ S M), temperature-averaged entropy change (TEC 3), and relative cooling power (RCP) were estimated to be 11.03 J/kgK, 11.02 J/kgK, and 322.7 J/kg for HCMO, and 12.94 J/kgK, 12.80 J/kgK and 277.5 J/kg for ECMO. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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