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Title: Anisotropic magnetocaloric effect in single crystals of CrI 3

Abstract

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) .

Authors:
 [1]; ORCiD logo [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1462402
Alternate Identifier(s):
OSTI ID: 1438066
Report Number(s):
BNL-207871-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1902163
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 17; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Liu, Yu, and Petrovic, Cedomir. Anisotropic magnetocaloric effect in single crystals of CrI3. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.174418.
Liu, Yu, & Petrovic, Cedomir. Anisotropic magnetocaloric effect in single crystals of CrI3. United States. https://doi.org/10.1103/PhysRevB.97.174418
Liu, Yu, and Petrovic, Cedomir. Mon . "Anisotropic magnetocaloric effect in single crystals of CrI3". United States. https://doi.org/10.1103/PhysRevB.97.174418. https://www.osti.gov/servlets/purl/1462402.
@article{osti_1462402,
title = {Anisotropic magnetocaloric effect in single crystals of CrI3},
author = {Liu, Yu and Petrovic, Cedomir},
abstractNote = {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) .},
doi = {10.1103/PhysRevB.97.174418},
journal = {Physical Review B},
number = 17,
volume = 97,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:

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Cited by: 44 works
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Figures / Tables:

FIG. 1 FIG. 1: (Color online). Typical temperature dependences of zero-field cooling (ZFC) and field-cooling (FC) magnetizations, M(T,H), of CrI3 measured at the indicated magnetic fields applied (a,c) in the ab plane and (b,d) along the c axis. Insets are the dM=dT curves. Ac susceptibility real part χ′ (T) as a functionmore » of temperature measured with oscillated ac field of 3.8 Oe and frequency of 499 Hz applied (e) in the ab plane and (f) the c axis. Inset shows the enlargement region around Tc.« less

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Works referencing / citing this record:

Magnetic Entropy Scaling in Ferromagnetic Semiconductor CrGeTe 3
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Thickness-dependent magnetic order in CrI3 single crystals
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Thickness-dependent magnetic order in CrI$_3$ single crystals
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.