Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice
The development of magnetic refrigerants with both low-field responsiveness and a large magnetic entropy change in the sub-Kelvin temperature range remains a critical challenge for advancing cryogenic technologies. This study focuses on the monoclinic compound Gd<sub>7</sub>(BO<sub>...
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2025-03-01
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| author | Lu Tian Xuetong He Zhiwen Shen Xinqiang Gao Zhaojun Mo |
| author_facet | Lu Tian Xuetong He Zhiwen Shen Xinqiang Gao Zhaojun Mo |
| author_sort | Lu Tian |
| collection | DOAJ |
| description | The development of magnetic refrigerants with both low-field responsiveness and a large magnetic entropy change in the sub-Kelvin temperature range remains a critical challenge for advancing cryogenic technologies. This study focuses on the monoclinic compound Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub>, in which high-density Gd<sup>3+</sup> ions form magnetic frustrated structures within the <i>bc</i>-plane and stack along the <i>a</i>-axis direction. The combination of a high magnetic ion density and frustrated magnetic configuration enables the coexistence of a low magnetic transition temperature and excellent magnetocaloric effects. Magnetic susceptibility measurements reveal an antiferromagnetic-to-paramagnetic phase transition below 2 K. The maximum magnetic entropy change reaches 35.2 J kg<sup>−1</sup> K<sup>−1</sup> under a varying magnetic field of 0–7 T. This study highlights the potential of frustrated magnetic interactions in monoclinic lattices with a high Gd<sup>3+</sup> content for achieving superior cryogenic magnetocaloric performance. |
| format | Article |
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| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-5e62c1c5e6624aa6ac6d7300d18f9b9f2025-08-20T02:15:55ZengMDPI AGApplied Sciences2076-34172025-03-01157380210.3390/app15073802Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic LatticeLu Tian0Xuetong He1Zhiwen Shen2Xinqiang Gao3Zhaojun Mo4Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, ChinaKey Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, ChinaKey Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, ChinaKey Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, ChinaKey Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, ChinaThe development of magnetic refrigerants with both low-field responsiveness and a large magnetic entropy change in the sub-Kelvin temperature range remains a critical challenge for advancing cryogenic technologies. This study focuses on the monoclinic compound Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub>, in which high-density Gd<sup>3+</sup> ions form magnetic frustrated structures within the <i>bc</i>-plane and stack along the <i>a</i>-axis direction. The combination of a high magnetic ion density and frustrated magnetic configuration enables the coexistence of a low magnetic transition temperature and excellent magnetocaloric effects. Magnetic susceptibility measurements reveal an antiferromagnetic-to-paramagnetic phase transition below 2 K. The maximum magnetic entropy change reaches 35.2 J kg<sup>−1</sup> K<sup>−1</sup> under a varying magnetic field of 0–7 T. This study highlights the potential of frustrated magnetic interactions in monoclinic lattices with a high Gd<sup>3+</sup> content for achieving superior cryogenic magnetocaloric performance.https://www.mdpi.com/2076-3417/15/7/3802magnetic refrigerantsmagnetocaloric effectsfrustrated magnetic structureselectronic structuremonoclinic |
| spellingShingle | Lu Tian Xuetong He Zhiwen Shen Xinqiang Gao Zhaojun Mo Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice Applied Sciences magnetic refrigerants magnetocaloric effects frustrated magnetic structures electronic structure monoclinic |
| title | Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice |
| title_full | Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice |
| title_fullStr | Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice |
| title_full_unstemmed | Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice |
| title_short | Magnetism and Low-Temperature Magnetocaloric Effect in Gd<sub>7</sub>(BO<sub>3</sub>)(PO<sub>4</sub>)<sub>2</sub>O<sub>6</sub> Compound with Monoclinic Lattice |
| title_sort | magnetism and low temperature magnetocaloric effect in gd sub 7 sub bo sub 3 sub po sub 4 sub sub 2 sub o sub 6 sub compound with monoclinic lattice |
| topic | magnetic refrigerants magnetocaloric effects frustrated magnetic structures electronic structure monoclinic |
| url | https://www.mdpi.com/2076-3417/15/7/3802 |
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