Critical behavior and magnetocaloric effect in
Abstract
Here, the critical properties and magnetocaloric effect of semiconducting ferrimagnet Mn 3Si 2Te 6 single crystals have been investigated by bulk magnetization and heat capacity around T c. Critical exponents β = 0.41 ± 0.01 with a critical temperature T c = 74.18 ± 0.08 K and γ = 1.21 ± 0.02 with T c = 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 -ΔS M features a maximum at T c, 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 ΔT ad ~ 1.14 K with out-of-plane field change of 9 T.
- Authors:
-
[1];
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1476290
- Alternate Identifier(s):
- OSTI ID: 1466855
- Report Number(s):
- BNL-209124-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 6; 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; 36 MATERIALS SCIENCE; magnetism
Citation Formats
Liu, Yu, and Petrovic, C. Critical behavior and magnetocaloric effect in Mn3Si2Te6. United States: N. p., 2018.
Web. doi:10.1103/PhysRevB.98.064423.
Liu, Yu, & Petrovic, C. Critical behavior and magnetocaloric effect in Mn3Si2Te6. United States. doi:10.1103/PhysRevB.98.064423.
Liu, Yu, and Petrovic, C. Mon .
"Critical behavior and magnetocaloric effect in Mn3Si2Te6". United States. doi:10.1103/PhysRevB.98.064423. https://www.osti.gov/servlets/purl/1476290.
@article{osti_1476290,
title = {Critical behavior and magnetocaloric effect in Mn3Si2Te6},
author = {Liu, Yu and Petrovic, C.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.98.064423},
journal = {Physical Review B},
number = 6,
volume = 98,
place = {United States},
year = {2018},
month = {8}
}
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