Magnetic properties and giant cryogenic magnetocaloric effect in B-site ordered antiferromagnetic Gd2MgTiO6 double perovskite oxide

Zhang, Yikun; Tian, Yun; Zhang, Zhenqian; Jia, Youshun; Zhang, Bin; Jiang, Minqiang; Wang, Jiang; Ren, Zhongming

doi:10.1016/j.actamat.2022.117669

Cited by 172 publications

(45 citation statements)

References 54 publications

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“…The magnitudes of the MC effect have a strong correlation with the corresponding magnetic phase transition (MPT); therefore, the investigation of the MC effects of magnetic materials can provide considerable valuable information for the better understanding of MPT [5][6][7][8][9]. Therefore, many magnetic materials have been synthesized and systematically determined with regard to the magnetic proper-ties, MPT, and MC performances not only to search for suitable candidates for active MR application at cryogenic and near room temperature but also to better understand the MPT of magnetic materials [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. However, a large gap still exists at the present stage between the practical MR application requirements and the performances of known MC materials.…”

Section: Introductionmentioning

confidence: 99%

“…In the last several decades, investigations have been performed on the MPT and MC effects in the rare-earth (RE)-based materials in amorphous and crystallized states owing to the large magnetic moments of RE ions, which result in considerable MC effects [18][19][20][21][22][23][24][25]. Law and Franco [13] reviewed the MC performances in RE-based high-entropy alloys.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic properties and promising magnetocaloric performances in the antiferromagnetic GdFe2Si2 compound

et al. 2022

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The magnetocaloric (MC) effect-based solidstate magnetic refrigeration (MR) technology has been recognized as an alternative novel method to the presently commercialized gas compression technology. Searching for suitable candidates with promising MC performances is one of the most urgent tasks. Herein, combined experimental and theoretical investigations on the magnetic properties, magnetic phase transition, and cryogenic MC performances of GdFe 2 Si 2 have been performed. An unstable antiferromagnetic (AFM) interaction in the ground state has been confirmed in GdFe 2 Si 2 . Moreover, a huge reversible cryogenic MC effect and promising MC performances in GdFe 2 Si 2 have been observed. The maximum isothermal magnetic entropy change, temperature-averaged entropy change with 2 K lift, and refrigerant capacity for GdFe 2 Si 2 were 30.01 J kg −1 K −1 , 29.37 J kg −1 K −1 , and 328.45 J kg −1 at around 8.6 K with the magnetic change of 0-7 T, respectively. Evidently, the values of these MC parameters for the present AFM compound GdFe 2 Si 2 are superior to those of most recently reported rareearth-based MC materials, suggesting the potential application for active cryogenic MR.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic properties and promising magnetocaloric performances in the antiferromagnetic GdFe2Si2 compound

et al. 2022

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“…By using a large variety of magnetic materials and different thermodynamic cycles, MR can operate in a very wide temperature range (from extremely low temperatures up to room temperature) [7][8][9][10][11][12][13][14][15][16][17]. In recent years, lowtemperature MR has received extensive attention due to its important applications, such as industrial gas liquefaction and storage, cryogenic space technology, and laboratory cryogenic basic research [18][19][20][21][22][23][24][25]. Liquid H 2 is a clean fuel that is widely used in the aerospace field and is expected to extend its use towards conventional applications.…”

Section: Introductionmentioning

confidence: 99%

Excellent cryogenic magnetocaloric properties in heavy rare-earth based HRENiGa2 (HRE = Dy, Ho, or Er) compounds

et al. 2022

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RENiX2 compounds, where RE = rare-earth element and X = p-block element, have been highly regarded for cryogenic magnetocaloric applications. Depending on the elements, they can crystallize in CeNiSi2-type, NdNiGa2-type, or MgCuAl2-type crystal structures, showing different types of magnetic ordering and thus affect their magnetic properties. Regarding the magnetocaloric effect, MgCuAl2-type aluminides show larger values than those of the CeNiSi2-type silicides and the NdNiGa2-type gallides due to the favored ferromagnetic ground state. However, RENiGa2 gallides can crystallize in either NdNiGa2- or MgCuAl2-type structures depending on the RE element. In this work, we select heavy RE (HRE) elements for exploring the microstructure, magnetic ordering and magnetocaloric performance of HRENiGa2 (HRE = Dy, Ho or Er) gallides. They all crystallize in the desired MgCuAl2-type crystal structure which undergoes a second-order transition from ferro- to para-magnetic state with increasing temperature. The maximum isothermal entropy change (∣∆Sisomax∣) values are 6.2, 10.4, and 11.4 J kg−1 K−1 (0–5 T) for DyNiGa2, HoNiGa2, and ErNiGa2, respectively, which are comparable to many recently reported cryogenic magnetocaloric materials. Particularly, the excellent magnetocaloric properties of HoNiGa2 and ErNiGa2 compounds, including their composite, fall in the temperature range that enables them for the in-demand hydrogen liquefaction systems.

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“…Since the discovery of the giant MCE of Gd 5 Si 2 Ge 2 in 1997 [1], much effort has been put into searching for magnetic materials with large MCEs, the so-called magnetocaloric materials, owing to their potential application to magnetic refrigeration near room temperature [2][3][4]. Recently, with the growing interest in magnetic refrigerators for liquefaction of nitrogen, hydrogen, and helium, magnetocaloric materials for low temperature applications have been enthusiastically investigated for a wide range of materials, from rare-earth based alloys [5][6][7][8][9][10] to rare-earth based oxides [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Magnetic, thermal, and magnetocaloric properties of the holmium trialuminide HoAl$_{3}$ with polytypic phases

Yamamoto,

de Castro,

Terashima

et al. 2022

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We investigate the magnetic, thermal, and magnetocaloric properties of the intermetallic HoAl 3 compounds with two different crystal structures. The roomtemperature equilibrium trigonal phase HoAl 3 undergoes an antiferromagnetic (AFM) transition at the Néel temperature T tri N = 9.8 K. The AFM ordering of the compound is strong against the magnetic field, so that inverse magnetocaloric effect (MCE) is found even under a magnetic field change of 0-50 kOe. The highpressure cubic phase HoAl 3 , prepared by a rapid-solidification process, is antiferromagnetically ordered below T cub N = 15 K. Magnetic and specific heat measurements reveal that this long-range AFM state becomes unstable as the temperature drops and then it is replaced by a magnetic glassy state below a spin freezing temperature T f = 11 K. The successive changes in magnetic state result in complicated temperature and field dependence of the MCE at low temperatures.

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Magnetic properties and giant cryogenic magnetocaloric effect in B-site ordered antiferromagnetic Gd2MgTiO6 double perovskite oxide

Cited by 172 publications

References 54 publications

Magnetic properties and promising magnetocaloric performances in the antiferromagnetic GdFe2Si2 compound

Magnetic properties and promising magnetocaloric performances in the antiferromagnetic GdFe2Si2 compound

Excellent cryogenic magnetocaloric properties in heavy rare-earth based HRENiGa2 (HRE = Dy, Ho, or Er) compounds

Magnetic, thermal, and magnetocaloric properties of the holmium trialuminide HoAl$_{3}$ with polytypic phases

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