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Critical behavior and magnetocaloric effect in Mn3Si2Te6

Journal Article · · Physical Review B
 [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.

Here, the critical properties and magnetocaloric effect of semiconducting ferrimagnet Mn3Si2Te6 single crystals have been investigated by bulk magnetization and heat capacity around Tc. Critical exponents β = 0.41 ± 0.01 with a critical temperature Tc = 74.18 ± 0.08 K and γ = 1.21 ± 0.02 with Tc = 74.35 ± 0.05 K are deduced by the Kouvel-Fisher plot, whereas δ = 4.29 ± 0.05 (3.40 ± 0.02) is obtained by a critical isotherm analysis at T = 74(75)K. The magnetic exchange distance is found to decay as J (r) ≈ r-4.79, which lies between the mean-field and 3D Heisenberg models. Moreover, the magnetic entropy change -ΔSM features a maximum at Tc, i.e., -ΔS$$max\atop{M}$$ ~ 2.53 (1.67) J kg-1 K-1 with in-plane (out-of-plane) field change of 5 T, confirming large magnetic anisotropy. The heat capacity measurement further gives -ΔS$$max\atop{M}$$ ~ 2.94 J kg-1 K-1 and the corresponding adiabatic temperature change ΔTad ~ 1.14 K with out-of-plane field change of 9 T.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0012704
OSTI ID:
1476290
Alternate ID(s):
OSTI ID: 1466855
Report Number(s):
BNL--209124-2018-JAAM
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 6 Vol. 98; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Magnetic Entropy Scaling in Ferromagnetic Semiconductor CrGeTe 3 journal June 2019
Critical behavior of intercalated quasi-van der Waals ferromagnet F e 0.26 Ta S 2 journal November 2019
Magnetic Properties of Proton Irradiated Mn3Si2Te6 van der Waals Single Crystals journal January 2019

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