Magnetic properties and large low-field cryogenic magnetocaloric effect in the divalent europium borate Eu2B2O5 compound

Mo, Zhaojun; Liu, Quanyi; Hao, Wexiang; Li, Lingwei; Xie, Huicai; Fu, Qi; Gao, Xinqiang; Shen, Jun

doi:10.1016/j.mtphys.2024.101351

Materials Today Physics

2024

DOI: 10.1016/j.mtphys.2024.101351

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Magnetic properties and large low-field cryogenic magnetocaloric effect in the divalent europium borate Eu2B2O5 compound

Zhaojun Mo,

Quanyi Liu,

Wexiang Hao

et al.

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2024

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Cited by 8 publications

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Magnetocaloric Effect in the Full‐Heusler Alloy Ga₂MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Kerrai,

Zaim,

Kerouad

2024

Physica Rapid Research Ltrs

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In this manuscript, the magnetic and magnetocaloric properties of the MnNi compound are investigated using Monte Carlo simulations and first‐principles calculations. Initially, the electronic, structural, and magnetic characteristics of the alloy are explored. The findings indicate that the ferromagnetic state in the Fm (No. 216) structure, with an optimal lattice parameter of 5.88 Å, was the most stable state compared to nonmagnetic (NM) and antiferromagnetic (AFM) states. Phonon dispersion studies confirm the alloy's dynamic stability, while the density of states reveal metallic behavior at the Fermi level. The total magnetic moment is calculated to be 3.48 . Additionally, exchange interactions are computed for Monte Carlo simulations, predicting a Curie temperature () of 331 K, consistent with experimental measurements ( = 330 K). Furthermore, the alloy exhibited a relative cooling power (RCP) of 1133.16 J kg−1 and a magnetocaloric effect of 19.65 J kg−1 K−1 at an applied magnetic field of 5 T. These results indicate that the MnNi full‐Heusler alloy is a potential option for use in magnetic refrigeration applications.

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Magnetocaloric Effect in the Full‐Heusler Alloy Ga₂MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Kerrai,

Zaim,

Kerouad

2024

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

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Unveiling the Structural, Electronic and Magnetic Properties of Gd_4.5A_0.5Si₃O₁₃ (A = K, Na, and Li) Oxides With Promising Potential for Low‐Temperature Magnetic Cooling

Zhang,

Law,

et al. 2024

Small

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The growing demand for solid‐state magnetic cooling, leveraging the magnetocaloric effect requires the discovery of high‐performing magnetocaloric materials (MCMs). Herein, a family of Gd‐containing MCMs is provided, specifically the Gd4.5A0.5Si3O13 (A = K, Na, and Li) oxides, which demonstratse exceptional low‐temperature magnetocaloric performance. Through comprehensive experimental investigations and theoretical calculations on their structural, electronic, and magnetic properties, it is unequivocally confirmed that all of them crystallize in a hexagonal apatite‐type structure (space group P63/m), exhibiting an antiferromagnetic semiconductor ground state with magnetic ordering temperatures below 1.8 K (typically ≈0.7 K for Gd4.5K0.5Si3O13). Furthermore, their remarkable maximum magnetic entropy change (−ΔSMmax) values of 31.85 and 58.22 J kgK−1 for Gd4.5K0.5Si3O13; 25.31 and 55.01 J kgK−1 for Gd4.5Na0.5Si3O13; and 25.15 and 55.77 J kgK−1 for Gd4.5Li0.5Si3O13, under the magnetic field changes of 0‐2 and 0‐5 T, respectively, surpass those of prominent low‐temperature MCMs, including the commercialized Gd3Ga5O12 (≈14.6 and 32.8 J kgK−1) paramagnetic salt. These findings in addition to their high environmental stability position these Gd4.5A0.5Si3O13 oxides as exceptionally promising for practical magnetic cooling applications.

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Magnetic phase transition and magnetocaloric effect in amorphous Gd52Fe28B20 alloy

El Ouahbi,

Abouricha,

El Ouahbi

et al. 2024

Appl. Phys. A

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Magnetic properties and large low-field cryogenic magnetocaloric effect in the divalent europium borate Eu2B2O5 compound

Cited by 8 publications

References 37 publications

Magnetocaloric Effect in the Full‐Heusler Alloy Ga₂MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Magnetocaloric Effect in the Full‐Heusler Alloy Ga₂MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Unveiling the Structural, Electronic and Magnetic Properties of Gd_4.5A_0.5Si₃O₁₃ (A = K, Na, and Li) Oxides With Promising Potential for Low‐Temperature Magnetic Cooling

Magnetic phase transition and magnetocaloric effect in amorphous Gd52Fe28B20 alloy

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Magnetic properties and large low-field cryogenic magnetocaloric effect in the divalent europium borate Eu2B2O5 compound

Cited by 8 publications

References 37 publications

Magnetocaloric Effect in the Full‐Heusler Alloy Ga2MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Magnetocaloric Effect in the Full‐Heusler Alloy Ga2MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Unveiling the Structural, Electronic and Magnetic Properties of Gd4.5A0.5Si3O13 (A = K, Na, and Li) Oxides With Promising Potential for Low‐Temperature Magnetic Cooling

Magnetic phase transition and magnetocaloric effect in amorphous Gd52Fe28B20 alloy

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Product

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Magnetocaloric Effect in the Full‐Heusler Alloy Ga₂MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Magnetocaloric Effect in the Full‐Heusler Alloy Ga₂MnNi for Magnetic Refrigeration: A First‐Principles and Monte Carlo Study

Unveiling the Structural, Electronic and Magnetic Properties of Gd_4.5A_0.5Si₃O₁₃ (A = K, Na, and Li) Oxides With Promising Potential for Low‐Temperature Magnetic Cooling