Large cryogenic magnetocaloric effect in transition metal-based double dinitrates

Zuhua Chen; Chengliang Zhang; Zhengming Zhang; Haiming Lu; Linglu Wu; Guochun Zhang; Heng Tu; Zhenxing Li; Jun Shen; Dunhui Wang

doi:10.1063/5.0243733

Large cryogenic magnetocaloric effect in transition metal-based double dinitrates

Zuhua Chen
, Chengliang Zhang
, Zhengming Zhang
, Haiming Lu
, Linglu Wu
, Guochun Zhang
, Heng Tu
, Zhenxing Li
, Jun Shen^*
, Dunhui Wang^*

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Exploring paramagnetic salts with weak magnetic interactions and large saturation magnetic moments is of great significance in the field of cryogenic magnetic refrigeration. In this article, the first-principles calculation is performed to predict the magnetocaloric effect (MCE) of La-transition metal-based double nitrate hydrated salts. Through the comparison of the calculation results, La₂Mn₃(NO₃)₁₂·24H₂O (LMnN) is chosen for further research on cryogenic magnetic refrigeration. The magnetic measurements reveal a weak antiferromagnetic interaction and large saturation magnetic moment of 4.95 μ_B of LMnN, which are consistent with theoretical calculation results. In addition, the maximum magnetic entropy change of LMnN is calculated to be 26.61 J kg⁻¹ K⁻¹ under a magnetic field change of 7 T at 2.5 K, which is greater than that of another double nitrate hydrated salts La₂Co₃(NO₃)₁₂·24H₂O (LCoN). Excellent MCE verifies the rationality of first-principles calculation and suggests that LMnN is a promising hydrated paramagnetic salt for cryogenic magnetic refrigeration.

Original language	English
Article number	262403
Journal	Applied Physics Letters
Volume	125
Issue number	26
DOIs	https://doi.org/10.1063/5.0243733
Publication status	Published - 23 Dec 2024

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title = "Large cryogenic magnetocaloric effect in transition metal-based double dinitrates",

abstract = "Exploring paramagnetic salts with weak magnetic interactions and large saturation magnetic moments is of great significance in the field of cryogenic magnetic refrigeration. In this article, the first-principles calculation is performed to predict the magnetocaloric effect (MCE) of La-transition metal-based double nitrate hydrated salts. Through the comparison of the calculation results, La2Mn3(NO3)12·24H2O (LMnN) is chosen for further research on cryogenic magnetic refrigeration. The magnetic measurements reveal a weak antiferromagnetic interaction and large saturation magnetic moment of 4.95 μB of LMnN, which are consistent with theoretical calculation results. In addition, the maximum magnetic entropy change of LMnN is calculated to be 26.61 J kg−1 K−1 under a magnetic field change of 7 T at 2.5 K, which is greater than that of another double nitrate hydrated salts La2Co3(NO3)12·24H2O (LCoN). Excellent MCE verifies the rationality of first-principles calculation and suggests that LMnN is a promising hydrated paramagnetic salt for cryogenic magnetic refrigeration.",

author = "Zuhua Chen and Chengliang Zhang and Zhengming Zhang and Haiming Lu and Linglu Wu and Guochun Zhang and Heng Tu and Zhenxing Li and Jun Shen and Dunhui Wang",

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doi = "10.1063/5.0243733",

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T1 - Large cryogenic magnetocaloric effect in transition metal-based double dinitrates

AU - Chen, Zuhua

AU - Zhang, Chengliang

AU - Zhang, Zhengming

AU - Lu, Haiming

AU - Wu, Linglu

AU - Zhang, Guochun

AU - Tu, Heng

AU - Li, Zhenxing

AU - Shen, Jun

AU - Wang, Dunhui

PY - 2024/12/23

Y1 - 2024/12/23

N2 - Exploring paramagnetic salts with weak magnetic interactions and large saturation magnetic moments is of great significance in the field of cryogenic magnetic refrigeration. In this article, the first-principles calculation is performed to predict the magnetocaloric effect (MCE) of La-transition metal-based double nitrate hydrated salts. Through the comparison of the calculation results, La2Mn3(NO3)12·24H2O (LMnN) is chosen for further research on cryogenic magnetic refrigeration. The magnetic measurements reveal a weak antiferromagnetic interaction and large saturation magnetic moment of 4.95 μB of LMnN, which are consistent with theoretical calculation results. In addition, the maximum magnetic entropy change of LMnN is calculated to be 26.61 J kg−1 K−1 under a magnetic field change of 7 T at 2.5 K, which is greater than that of another double nitrate hydrated salts La2Co3(NO3)12·24H2O (LCoN). Excellent MCE verifies the rationality of first-principles calculation and suggests that LMnN is a promising hydrated paramagnetic salt for cryogenic magnetic refrigeration.

AB - Exploring paramagnetic salts with weak magnetic interactions and large saturation magnetic moments is of great significance in the field of cryogenic magnetic refrigeration. In this article, the first-principles calculation is performed to predict the magnetocaloric effect (MCE) of La-transition metal-based double nitrate hydrated salts. Through the comparison of the calculation results, La2Mn3(NO3)12·24H2O (LMnN) is chosen for further research on cryogenic magnetic refrigeration. The magnetic measurements reveal a weak antiferromagnetic interaction and large saturation magnetic moment of 4.95 μB of LMnN, which are consistent with theoretical calculation results. In addition, the maximum magnetic entropy change of LMnN is calculated to be 26.61 J kg−1 K−1 under a magnetic field change of 7 T at 2.5 K, which is greater than that of another double nitrate hydrated salts La2Co3(NO3)12·24H2O (LCoN). Excellent MCE verifies the rationality of first-principles calculation and suggests that LMnN is a promising hydrated paramagnetic salt for cryogenic magnetic refrigeration.

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U2 - 10.1063/5.0243733

DO - 10.1063/5.0243733

M3 - Article

AN - SCOPUS:85213030468

SN - 0003-6951

VL - 125

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

M1 - 262403

ER -

Large cryogenic magnetocaloric effect in transition metal-based double dinitrates

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