Growth and Magnetocaloric Properties of Co(NH4)2(SO4)2·6H2O Crystal
Co(NH4)2(SO4)2·6H2O single crystal was grown via slow solvent evaporation at room temperature. The magnetic and magnetocaloric properties were investigated. The results show that Co(NH4)2(SO4)2·6H2O exhibits paramagnetic behavior across 2–300 K. The maximum magnetic entropy change (−ΔSM) of 13.90 J kg−1 K−1 under conditions of 2 K and μ0ΔH = 5 T approaches the theoretical value of 14.58 J kg−1 K−1. In addition, the variation of −ΔSM with temperature is relatively flat, suggesting a wide working temperature range for magnetic refrigeration, which provides the possibility for the application of Co2+-based compounds in the field of low-temperature magnetic refrigeration.
Authors
- Guochun Zhang (ORCID: https://orcid.org/0000-0002-8795-6130)
- Zuhua Chen
- Yuwei Chen (ORCID: https://orcid.org/0000-0003-0148-3609)
- Tian Wan (ORCID: https://orcid.org/0000-0002-9298-0872)
- Zhenxing Li (ORCID: https://orcid.org/0000-0002-4020-7490)
- Jun Shen (ORCID: https://orcid.org/0000-0001-8748-8085)
- Yanan Zhao
- Heng Tu (ORCID: https://orcid.org/0000-0003-2871-1800)
- Yunhui Wang (ORCID: https://orcid.org/0000-0002-0440-3750)
Institutions
- Beijing Institute of Technology (CN)
- Chinese Academy of Science and Technology for Development (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Crystals
- Published
- 2025-11-29
- DOI
- https://doi.org/10.3390/cryst15121022
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00