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Structural and magnetic properties of RE2O2SO4 (RE = Gd, Tb, Dy and Ho) oxides featuring large direct and inverse magnetocaloric effect.
- Source :
-
Ceramics International . Oct2024:Part A, Vol. 50 Issue 19, p35706-35713. 8p. - Publication Year :
- 2024
-
Abstract
- In this work, we fabricated the RE 2 O 2 SO 4 (RE = Gd, Tb, Dy and Ho) oxides by thermal decomposition and systematically determined regarding their structural and magnetic properties, especially of the magnetic phase transition (MPT) and magnetocaloric effect (MCE). All of these RE 2 O 2 SO 4 oxides are confirmed to crystallize in an orthogonal structure (space group: pmnb); the constituting elements are all distributed uniformly and presented as the RE 3+, S6+, and O2− valence states, respectively. They all exhibit a typical cryogenic MPT from paramagnetic to antiferromagnetic (AFM) state together with a field-induced metamagnetic transition (first-order type MPT) from AFM to ferromagnetic state below their MPT temperatures. All of these RE 2 O 2 SO 4 oxides exhibit considerable direct and inverse cryogenic MCE. The determined direct magnetocaloric parameters of present RE 2 O 2 SO 4 oxides, especially of Gd 2 O 2 SO 4 and Ho 2 O 2 SO 4 oxides, are comparable with most of recently reported RE -based magnetic solids, making them also considerable for practical cryogenic MR applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 178909291
- Full Text :
- https://doi.org/10.1016/j.ceramint.2024.06.388