dorsal/arxiv
View SchemaHigh isothermal magnetocaloric effect in La(Fe,Si)13 based alloys
| Authors | A. P. Kamantsev, Yu. S. Koshkid`ko, O. E. Kovalev, N. Yu. Nyrkov, A. V. Golovchan, A. A. Amirov, A. M. Aliev |
|---|---|
| Categories | |
| ArXiv ID | 2601.07478vv1 |
| URL | https://arxiv.org/abs/2601.07478 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
This work investigates the magnetocaloric effect (MCE) in LaFe_{11.6}Si_{1.4} and LaFe_{11.78}Mn_{0.41}Si_{1.32}H_{1.6} alloys under adiabatic {\Delta}T and isothermal {\Delta}Q conditions in a magnetic field of {\mu}_{0}H = 1.8 T. The studied samples exhibited high reproducibility of the {\Delta}Q-effect upon cyclic magnetic field application, which is of critical importance for magnetic cooling systems.The LaFe_{11.78}Mn_{0.41}Si_{1.32}H_{1.6} alloy demonstrate high values of the isothermal MCE, with a maximum {\Delta}Q = 3400 J/kg in a magnetic field of {\mu}0H = 1.8 T near the Curie temperature (TC) of 275 K. This value is 2.5 times higher than the well-known corresponding values for pure Gd at room temperature. Furthermore, the structural and magnetic properties of LaFe13-xSix-based alloys with Cr and Co additions were investigated using density functional theory calcula-tions. It was shown that the addition of Cr leads to a decrease in the equilibrium volume, i.e., to a com-pression of the crystal lattice, whereas Co addition causes its expansion. These changes are expected to increase or decrease the T_{C}, respectively.
{
"annotation_id": "eb1bc4fc-076e-497a-95dc-83ff90bd5053",
"date_created": "2026-02-17T05:53:12.390000Z",
"date_modified": "2026-02-17T05:53:12.390000Z",
"file_hash": "c1b43a8735e8adf84b5c59476e6f0944d4e75f0d5d15d3655b0e91c439ae6248",
"private": false,
"record": {
"abstract": "This work investigates the magnetocaloric effect (MCE) in LaFe_{11.6}Si_{1.4} and LaFe_{11.78}Mn_{0.41}Si_{1.32}H_{1.6} alloys under adiabatic {\\Delta}T and isothermal {\\Delta}Q conditions in a magnetic field of {\\mu}_{0}H = 1.8 T. The studied samples exhibited high reproducibility of the {\\Delta}Q-effect upon cyclic magnetic field application, which is of critical importance for magnetic cooling systems.The LaFe_{11.78}Mn_{0.41}Si_{1.32}H_{1.6} alloy demonstrate high values of the isothermal MCE, with a maximum {\\Delta}Q = 3400 J/kg in a magnetic field of {\\mu}0H = 1.8 T near the Curie temperature (TC) of 275 K. This value is 2.5 times higher than the well-known corresponding values for pure Gd at room temperature. Furthermore, the structural and magnetic properties of LaFe13-xSix-based alloys with Cr and Co additions were investigated using density functional theory calcula-tions. It was shown that the addition of Cr leads to a decrease in the equilibrium volume, i.e., to a com-pression of the crystal lattice, whereas Co addition causes its expansion. These changes are expected to increase or decrease the T_{C}, respectively.",
"arxiv_id": "2601.07478",
"authors": [
"A. P. Kamantsev",
"Yu. S. Koshkid`ko",
"O. E. Kovalev",
"N. Yu. Nyrkov",
"A. V. Golovchan",
"A. A. Amirov",
"A. M. Aliev"
],
"categories": [
"cond-mat.mtrl-sci"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "High isothermal magnetocaloric effect in La(Fe,Si)13 based alloys",
"url": "https://arxiv.org/abs/2601.07478",
"version": "v1"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "73a67c6e-9d19-4471-a0bd-7a9b5f5f28ff",
"id": "arXiv Dataset",
"type": "Model",
"variant": "snapshot-2026-01-17",
"version": "0.1.0"
},
"user_id": 1000002
}