Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites
Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic str...
Ausführliche Beschreibung
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| Autor*in: |
Selmi, R. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Anmerkung: |
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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| Übergeordnetes Werk: |
Enthalten in: Journal of superconductivity - Dordrecht [u.a.] : Springer Science + Business Media B.V., 1988, 35(2022), 12 vom: 12. Sept., Seite 3585-3601 |
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| Übergeordnetes Werk: |
volume:35 ; year:2022 ; number:12 ; day:12 ; month:09 ; pages:3585-3601 |
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| DOI / URN: |
10.1007/s10948-022-06395-2 |
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SPR048589659 |
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| 520 | |a Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. | ||
| 650 | 4 | |a Magnetocaloric effect |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Landau theory |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Magnetic entropy change |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Relative cooling power |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Cherif, W. |4 aut | |
| 700 | 1 | |a Ferreira, N. M. |4 aut | |
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10.1007/s10948-022-06395-2 doi (DE-627)SPR048589659 (SPR)s10948-022-06395-2-e DE-627 ger DE-627 rakwb eng Selmi, R. verfasserin (orcid)0000-0002-1535-9169 aut Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. Magnetocaloric effect (dpeaa)DE-He213 Landau theory (dpeaa)DE-He213 Magnetic entropy change (dpeaa)DE-He213 Relative cooling power (dpeaa)DE-He213 Cherif, W. aut Ferreira, N. M. aut Enthalten in Journal of superconductivity Dordrecht [u.a.] : Springer Science + Business Media B.V., 1988 35(2022), 12 vom: 12. Sept., Seite 3585-3601 (DE-627)313651175 (DE-600)2000540-4 1572-9605 nnns volume:35 year:2022 number:12 day:12 month:09 pages:3585-3601 https://dx.doi.org/10.1007/s10948-022-06395-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 35 2022 12 12 09 3585-3601 |
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10.1007/s10948-022-06395-2 doi (DE-627)SPR048589659 (SPR)s10948-022-06395-2-e DE-627 ger DE-627 rakwb eng Selmi, R. verfasserin (orcid)0000-0002-1535-9169 aut Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. Magnetocaloric effect (dpeaa)DE-He213 Landau theory (dpeaa)DE-He213 Magnetic entropy change (dpeaa)DE-He213 Relative cooling power (dpeaa)DE-He213 Cherif, W. aut Ferreira, N. M. aut Enthalten in Journal of superconductivity Dordrecht [u.a.] : Springer Science + Business Media B.V., 1988 35(2022), 12 vom: 12. Sept., Seite 3585-3601 (DE-627)313651175 (DE-600)2000540-4 1572-9605 nnns volume:35 year:2022 number:12 day:12 month:09 pages:3585-3601 https://dx.doi.org/10.1007/s10948-022-06395-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 35 2022 12 12 09 3585-3601 |
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10.1007/s10948-022-06395-2 doi (DE-627)SPR048589659 (SPR)s10948-022-06395-2-e DE-627 ger DE-627 rakwb eng Selmi, R. verfasserin (orcid)0000-0002-1535-9169 aut Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. Magnetocaloric effect (dpeaa)DE-He213 Landau theory (dpeaa)DE-He213 Magnetic entropy change (dpeaa)DE-He213 Relative cooling power (dpeaa)DE-He213 Cherif, W. aut Ferreira, N. M. aut Enthalten in Journal of superconductivity Dordrecht [u.a.] : Springer Science + Business Media B.V., 1988 35(2022), 12 vom: 12. Sept., Seite 3585-3601 (DE-627)313651175 (DE-600)2000540-4 1572-9605 nnns volume:35 year:2022 number:12 day:12 month:09 pages:3585-3601 https://dx.doi.org/10.1007/s10948-022-06395-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 35 2022 12 12 09 3585-3601 |
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10.1007/s10948-022-06395-2 doi (DE-627)SPR048589659 (SPR)s10948-022-06395-2-e DE-627 ger DE-627 rakwb eng Selmi, R. verfasserin (orcid)0000-0002-1535-9169 aut Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. Magnetocaloric effect (dpeaa)DE-He213 Landau theory (dpeaa)DE-He213 Magnetic entropy change (dpeaa)DE-He213 Relative cooling power (dpeaa)DE-He213 Cherif, W. aut Ferreira, N. M. aut Enthalten in Journal of superconductivity Dordrecht [u.a.] : Springer Science + Business Media B.V., 1988 35(2022), 12 vom: 12. Sept., Seite 3585-3601 (DE-627)313651175 (DE-600)2000540-4 1572-9605 nnns volume:35 year:2022 number:12 day:12 month:09 pages:3585-3601 https://dx.doi.org/10.1007/s10948-022-06395-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 35 2022 12 12 09 3585-3601 |
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10.1007/s10948-022-06395-2 doi (DE-627)SPR048589659 (SPR)s10948-022-06395-2-e DE-627 ger DE-627 rakwb eng Selmi, R. verfasserin (orcid)0000-0002-1535-9169 aut Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. Magnetocaloric effect (dpeaa)DE-He213 Landau theory (dpeaa)DE-He213 Magnetic entropy change (dpeaa)DE-He213 Relative cooling power (dpeaa)DE-He213 Cherif, W. aut Ferreira, N. M. aut Enthalten in Journal of superconductivity Dordrecht [u.a.] : Springer Science + Business Media B.V., 1988 35(2022), 12 vom: 12. Sept., Seite 3585-3601 (DE-627)313651175 (DE-600)2000540-4 1572-9605 nnns volume:35 year:2022 number:12 day:12 month:09 pages:3585-3601 https://dx.doi.org/10.1007/s10948-022-06395-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 35 2022 12 12 09 3585-3601 |
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Mg Deficiency Impacts on Magnetocaloric Behavior of $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) Manganites |
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Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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Abstract This study aims to investigate the magnetocaloric properties of a $ La_{0.77} %$ Mg_{0.23-x} $□x$ MnO_{3} $ (0 ≤ × ≤ 0.2) series elaborated using a solid-state method and published in Alloys Compd., 738, 2018, 528–539. In our crystallographic study, our compounds display an orthorhombic structure with Pnma group space. The Raman analysis confirms the structure formation of the compounds. The magnetic measurements show that all samples displayed a second-order magnetic phase transition from ferromagnetic to paramagnetic state, which is also supported by Landau's theory. The magnetic entropy change ($ ΔS_{M} $) and the relative cooling power (RCP) of $ La_{0.77-x} $□x$ Mg_{0.23} %$ MnO_{3} $ (0 ≤ × ≤ 0.2) samples are determined from their measured magnetization data as a function of the magnetic applied field. At $ μ_{0} $H = 5 T, the maximum value of the magnetic entropy change ΔSmax was found to decrease from 2.59 J/kg.K for x = 0.0 to 0.38 J/kg.K for x = 0.2. Our results indicate that the optimum magnetocaloric effect at H = 5 T occurs for the composition x = 0.0, which makes it a promising material in magnetic refrigeration. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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