Large reversible cryogenic magnetocaloric effect in rare earth iron carbides of composition RE2FeC4 (RE=Ho, Er, and Tm)

Jianjian Gong; Qi Fu; Hao Sun; Lu Tian; Xinqiang Gao; Zhenxing Li; Zhaojun Mo; Jun Shen

doi:10.1016/j.jre.2022.09.009

Large reversible cryogenic magnetocaloric effect in rare earth iron carbides of composition RE₂FeC₄ (RE=Ho, Er, and Tm)

Jianjian Gong, Qi Fu, Hao Sun, Lu Tian, Xinqiang Gao, Zhenxing Li, Zhaojun Mo^*, Jun Shen^*

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

At cryogenic temperatures, the investigations of magnetic phase transition and magnetocaloric effect in RE₂FeC₄ (RE = Ho, Er, and Tm) compounds were performed. Ho₂FeC₄ and Er₂FeC₄ compounds undergo two magnetic phase transitions with the temperature decreasing: from paramagnetic (PM) to ferromagnetic (FM) transition at their respective Curie temperature (T_C) and from FM to antiferromagnetic (AFM) or ferrimagnetic (FIM) transition below 2 K. Tm₂FeC₄ compound exhibits only a second-order PM to FM phase transition at T_C = 6 K. Large reversible MCE without hysteresis loss is observed in RE₂FeC₄ (RE = Ho, Er, and Tm) compounds. Particularly, the maximum value of magnetic entropy change (–ΔS_M) is 21.62 J/(kg·K) under the magnetic field change (Δμ₀H) of 0–5 T for Er₂FeC₄. The Er₂FeC₄ compound presenting excellent magnetocaloric performance makes it a competitive cryogenic magnetic refrigeration material.

Original language	English
Pages (from-to)	1996-2001
Number of pages	6
Journal	Journal of Rare Earths
Volume	41
Issue number	12
DOIs	https://doi.org/10.1016/j.jre.2022.09.009
Publication status	Published - Dec 2023
Externally published	Yes

Keywords

Cryogenic magnetic refrigeration
Magnetic phase transition
Magnetocaloric effect
REFeC (RE=Ho, Er, and Tm) compounds
Rare earths

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10.1016/j.jre.2022.09.009

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Gong, J., Fu, Q., Sun, H., Tian, L., Gao, X., Li, Z., Mo, Z., & Shen, J. (2023). Large reversible cryogenic magnetocaloric effect in rare earth iron carbides of composition RE₂FeC₄ (RE=Ho, Er, and Tm). Journal of Rare Earths, 41(12), 1996-2001. https://doi.org/10.1016/j.jre.2022.09.009

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title = "Large reversible cryogenic magnetocaloric effect in rare earth iron carbides of composition RE2FeC4 (RE=Ho, Er, and Tm)",

abstract = "At cryogenic temperatures, the investigations of magnetic phase transition and magnetocaloric effect in RE2FeC4 (RE = Ho, Er, and Tm) compounds were performed. Ho2FeC4 and Er2FeC4 compounds undergo two magnetic phase transitions with the temperature decreasing: from paramagnetic (PM) to ferromagnetic (FM) transition at their respective Curie temperature (TC) and from FM to antiferromagnetic (AFM) or ferrimagnetic (FIM) transition below 2 K. Tm2FeC4 compound exhibits only a second-order PM to FM phase transition at TC = 6 K. Large reversible MCE without hysteresis loss is observed in RE2FeC4 (RE = Ho, Er, and Tm) compounds. Particularly, the maximum value of magnetic entropy change (–ΔSM) is 21.62 J/(kg·K) under the magnetic field change (Δμ0H) of 0–5 T for Er2FeC4. The Er2FeC4 compound presenting excellent magnetocaloric performance makes it a competitive cryogenic magnetic refrigeration material.",

keywords = "Cryogenic magnetic refrigeration, Magnetic phase transition, Magnetocaloric effect, REFeC (RE=Ho, Er, and Tm) compounds, Rare earths",

author = "Jianjian Gong and Qi Fu and Hao Sun and Lu Tian and Xinqiang Gao and Zhenxing Li and Zhaojun Mo and Jun Shen",

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year = "2023",

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T1 - Large reversible cryogenic magnetocaloric effect in rare earth iron carbides of composition RE2FeC4 (RE=Ho, Er, and Tm)

AU - Gong, Jianjian

AU - Fu, Qi

AU - Sun, Hao

AU - Tian, Lu

AU - Gao, Xinqiang

AU - Li, Zhenxing

AU - Mo, Zhaojun

AU - Shen, Jun

PY - 2023/12

Y1 - 2023/12

N2 - At cryogenic temperatures, the investigations of magnetic phase transition and magnetocaloric effect in RE2FeC4 (RE = Ho, Er, and Tm) compounds were performed. Ho2FeC4 and Er2FeC4 compounds undergo two magnetic phase transitions with the temperature decreasing: from paramagnetic (PM) to ferromagnetic (FM) transition at their respective Curie temperature (TC) and from FM to antiferromagnetic (AFM) or ferrimagnetic (FIM) transition below 2 K. Tm2FeC4 compound exhibits only a second-order PM to FM phase transition at TC = 6 K. Large reversible MCE without hysteresis loss is observed in RE2FeC4 (RE = Ho, Er, and Tm) compounds. Particularly, the maximum value of magnetic entropy change (–ΔSM) is 21.62 J/(kg·K) under the magnetic field change (Δμ0H) of 0–5 T for Er2FeC4. The Er2FeC4 compound presenting excellent magnetocaloric performance makes it a competitive cryogenic magnetic refrigeration material.

AB - At cryogenic temperatures, the investigations of magnetic phase transition and magnetocaloric effect in RE2FeC4 (RE = Ho, Er, and Tm) compounds were performed. Ho2FeC4 and Er2FeC4 compounds undergo two magnetic phase transitions with the temperature decreasing: from paramagnetic (PM) to ferromagnetic (FM) transition at their respective Curie temperature (TC) and from FM to antiferromagnetic (AFM) or ferrimagnetic (FIM) transition below 2 K. Tm2FeC4 compound exhibits only a second-order PM to FM phase transition at TC = 6 K. Large reversible MCE without hysteresis loss is observed in RE2FeC4 (RE = Ho, Er, and Tm) compounds. Particularly, the maximum value of magnetic entropy change (–ΔSM) is 21.62 J/(kg·K) under the magnetic field change (Δμ0H) of 0–5 T for Er2FeC4. The Er2FeC4 compound presenting excellent magnetocaloric performance makes it a competitive cryogenic magnetic refrigeration material.

KW - Cryogenic magnetic refrigeration

KW - Magnetic phase transition

KW - Magnetocaloric effect

KW - REFeC (RE=Ho, Er, and Tm) compounds

KW - Rare earths

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AN - SCOPUS:85146855954

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JO - Journal of Rare Earths

JF - Journal of Rare Earths

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ER -

Large reversible cryogenic magnetocaloric effect in rare earth iron carbides of composition RE₂FeC₄ (RE=Ho, Er, and Tm)

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