Anisotropic magnetocaloric effect in single crystals of
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
We report a systematic investigation of dc magnetization and ac susceptibility, as well as anisotropic magnetocaloric effect in bulk CrI3 single crystals. A second-stage magnetic transition was observed just below the Curie temperature Tc, indicating a two-step magnetic ordering. The low temperature thermal demagnetization could be well fitted by the spin-wave model rather than the single-particle model, confirming its localized magnetism. The maximum magnetic entropy change -ΔS$$max\atop{M}$$ ~5.65 J kg-1 K-1 and the corresponding adiabatic temperature change ΔTad ~2.34 K are achieved from heat capacity analysis with the magnetic field up to 9 T. Anisotropy of ΔSM (T,H) was further investigated by isothermal magnetization, showing that the difference of -ΔS$$max\atop{M}$$ between the $ab$ plane and the c axis reaches a maximum value ~1.56 J kg-1 K-1 with the field change of 5 T. In conclusion, with the scaling analysis of ΔSM, the rescaled ΔSM (T,H) curves collapse onto a universal curve, indicating a second-order type of the magnetic transition. Furthermore, the -ΔS$$max\atop{M}$$ follows the power law of Hn with n = 0.64 (1), and the relative cooling power depends on Hm with m = 1.12 (1) .
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1462402
- Alternate ID(s):
- OSTI ID: 1438066
- Report Number(s):
- BNL-207871-2018-JAAM; PRBMDO; TRN: US1902163
- Journal Information:
- Physical Review B, Vol. 97, Issue 17; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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