Magnetism and magnetocaloric effect of multicomponent rare earth intermetallic hydride Gd0.2Tb0.2Dy0.2Ho0.2Er0.2NiH1.4
Multicomponent Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni (orthorhombic, FeB-type, space group Pnma, no. 62, oP8) compound with high-entropy substitution at the rare earth (R) site of RNi phase orders ferromagnetically at ∼66 K (TC). The hydride sample Gd0.2Tb0.2Dy0.2Ho0.2Er0.2NiH1.4 (orthorhombic, FeB-type) is nanocrystalline and it undergoes a paramagnetic to ferromagnetic order at ∼6 K. From the magnetization vs field (M-H) data, isothermal magnetic entropy change (ΔSm) is calculated. A maximum ΔSm value of −13.1 J kg−1 K−1 is obtained for 70 kOe field change at 8 K. Thus, magnetocaloric effect is slightly reduced in hydride when compared to −16.4 J kg−1 K−1 at 62.5 K in the parent Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni compound.
Authors
- A. R. Dhanya
- R. Nirmala (ORCID: https://orcid.org/0009-0002-7782-9944)
- A.V. Morozkin (ORCID: https://orcid.org/0000-0001-9495-9850)
- J. Arout Chelvane (ORCID: https://orcid.org/0000-0002-5106-7059)
- Sundara Ramaprabhu (ORCID: https://orcid.org/0000-0002-7960-9470)
- Abhaya Prasada Mohapatra (ORCID: https://orcid.org/0000-0003-2051-698X)
Institutions
- Lomonosov Moscow State University (RU)
- Defence Metallurgical Research Laboratory (IN)
- Indian Institute of Technology Madras (IN)
- Moscow State University (TJ)
Publication Details
- Journal
- AIP Advances
- Published
- 2025-03-01
- DOI
- https://doi.org/10.1063/9.0000909
- Citations
- 1
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- University Grants Commission
- Science and Engineering Research Board