Magnetic properties and magnetocaloric effect in RCr0.3Ge2 (R = Ho, Er) compounds
Polycrystalline RCr0.3Ge2 (R = Ho, Er) compounds exhibiting magnetic transitions in the liquid helium temperature region were successfully synthesized, and their magnetic properties and magnetocaloric effects (MCEs) were systematically investigated. Both compounds exhibit antiferromagnetic ordering with Néel temperature (TN) of 7.3 and 3.4 K, respectively. Notably, HoCr0.3Ge2 and ErCr0.3Ge2 compounds demonstrate large reversible MCEs characterized by negligible thermal and magnetic hysteresis. Under a magnetic field change of 0–5 T, the maximum magnetic entropy changes [(−ΔSM)max] reach 9.0 and 9.9 J/kg K for HoCr0.3Ge2 and ErCr0.3Ge2 compounds, respectively, accompanied by considerable refrigeration capacities of 118.1 and 111.0 J/kg. The combination of significant MCE performance and excellent reversibility near 4.2 K positions these materials as highly promising candidates for practical cryogenic magnetic refrigeration.
Authors
- S X Li (ORCID: https://orcid.org/0009-0000-6499-3556)
- Jiawang Xu (ORCID: https://orcid.org/0000-0001-7387-4380)
- S Wang (ORCID: https://orcid.org/0009-0002-6598-0946)
- Xinqi Zheng (ORCID: https://orcid.org/0000-0002-1894-4910)
- Lei Xi (ORCID: https://orcid.org/0000-0002-5564-9953)
- Yawei Gao (ORCID: https://orcid.org/0000-0002-2567-2853)
- Ying Liu (ORCID: https://orcid.org/0000-0002-1312-0146)
- Shiming Zhou (ORCID: https://orcid.org/0000-0003-3280-2473)
- Shouyuan Xing
- Junchao Sheng
- Baogen Shen
- Xucai Kan
Institutions
- Anhui University (CN)
- Chinese Academy of Sciences (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Division of Materials Science and Engineering (AU)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- Journal of Applied Physics
- Published
- 2026-06-16
- DOI
- https://doi.org/10.1063/5.0326823
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Anhui Province
- National Key Research and Development Program of China