Critical behavior and magnetocaloric effect in
- 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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Critical behavior of intercalated quasi-van der Waals ferromagnet F e 0.26 Ta S 2
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Magnetic Properties of Proton Irradiated Mn3Si2Te6 van der Waals Single Crystals
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