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Title: Anisotropic magnetocaloric effect in single crystals of CrI 3

Journal Article · · Physical Review B
 [1]; ORCiD logo [1]
  1. 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
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (7)

Magnetic Entropy Scaling in Ferromagnetic Semiconductor CrGeTe 3 journal June 2019
Thickness-dependent magnetic order in CrI3 single crystals journal September 2019
Magnetocaloric effect in cubically anisotropic magnets journal January 2019
Disorder-driven non-Fermi liquid behavior in itinerant ferromagnet α -Co 5 Ge 3 journal January 2020
Recent progress of spintronics based on emerging 2D materials: CrI 3 and Xenes journal December 2019
Anisotropic magnetic entropy change in Cr 2 X 2 Te 6 ( X = Si and Ge ) journal January 2019
Thickness-dependent magnetic order in CrI$_3$ single crystals text January 2019

Figures / Tables (9)


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