Critical Current and Pinning Features of a CaKFe4As4 Polycrystalline Sample
We analyze the magnetic behavior of a CaKFe4As4 polycrystalline sample fabricated by a mechanochemically assisted synthesis route. By means of DC magnetization (M) measurements as a function of the temperature (T) and DC magnetic field (H) we study its critical parameters and pinning features. The c...
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| Veröffentlicht in: | Materials 2021-11, Vol.14 (21), p.6611 |
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| creator | Galluzzi, Armando Leo, Antonio Masi, Andrea Varsano, Francesca Nigro, Angela Grimaldi, Gaia Polichetti, Massimiliano |
| description | We analyze the magnetic behavior of a CaKFe4As4 polycrystalline sample fabricated by a mechanochemically assisted synthesis route. By means of DC magnetization (M) measurements as a function of the temperature (T) and DC magnetic field (H) we study its critical parameters and pinning features. The critical temperature Tc has been evaluated by M(T) curves performed in Zero Field Cooling-Field Cooling conditions. These curves show the presence of a little magnetic background for temperatures above Tc, as also confirmed by the hysteresis loops M(H). Starting from the M(H) curves, the critical current density Jc of the sample has been calculated as a function of the field at different temperatures in the framework of the Bean critical state model. The Jc(H) values are in line with the ones reported in the literature for this typology of samples. By analyzing the temperature dependence of the critical current density Jc(T) at different magnetic fields, it has been found that the sample is characterized by a strong type pinning regime. This sample peculiarity can open perspectives for future improvement in the fabrication of this material. |
| doi_str_mv | 10.3390/ma14216611 |
| format | Article |
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By means of DC magnetization (M) measurements as a function of the temperature (T) and DC magnetic field (H) we study its critical parameters and pinning features. The critical temperature Tc has been evaluated by M(T) curves performed in Zero Field Cooling-Field Cooling conditions. These curves show the presence of a little magnetic background for temperatures above Tc, as also confirmed by the hysteresis loops M(H). Starting from the M(H) curves, the critical current density Jc of the sample has been calculated as a function of the field at different temperatures in the framework of the Bean critical state model. The Jc(H) values are in line with the ones reported in the literature for this typology of samples. By analyzing the temperature dependence of the critical current density Jc(T) at different magnetic fields, it has been found that the sample is characterized by a strong type pinning regime. This sample peculiarity can open perspectives for future improvement in the fabrication of this material.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma14216611</identifier><identifier>PMID: 34772137</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Cooling ; Cooling curves ; Critical current density ; Critical temperature ; Defects ; Hysteresis loops ; Magnetic fields ; Magnetic properties ; Pinning ; Polycrystals ; Single crystals ; Temperature dependence</subject><ispartof>Materials, 2021-11, Vol.14 (21), p.6611</ispartof><rights>2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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This sample peculiarity can open perspectives for future improvement in the fabrication of this material.</description><subject>Cooling</subject><subject>Cooling curves</subject><subject>Critical current density</subject><subject>Critical temperature</subject><subject>Defects</subject><subject>Hysteresis loops</subject><subject>Magnetic fields</subject><subject>Magnetic properties</subject><subject>Pinning</subject><subject>Polycrystals</subject><subject>Single crystals</subject><subject>Temperature dependence</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkUFr3DAQhUVJ6YbtXvoLBLmEwCaSJUvWpRBMtgkJdKHtWYzl8VZBljeSHdh_Xy8JTdO5zMB8PN7jEfKFs0shDLvqgcuCK8X5B3LKjVFrbqQ8-edekFXOj2weIXhVmE9kIaTWBRf6lNzXyY_eQaD1lBLGkUJs6dbH6OOObhDGKWGmQ0eB1nC_QXmdJd0O4eDSIY8Qgo9If0C_D_iZfOwgZFy97iX5tbn5Wd-uH75_u6uvH9ZOaDOusXIIykmtGgBRula0pW47xMpwhKpV2CArm8KgYi2KrlPaFY5JaEQjKizEknx90d1PTY-tm10nCHaffA_pYAfw9v0n-t92NzzbqqxKWbBZ4PxVIA1PE-bR9j47DAEiDlO2RWm0NFJVekbP_kMfhynFOd6RUqyUhh2pixfKpSHnhN1fM5zZY032rSbxB12vg_k</recordid><startdate>20211103</startdate><enddate>20211103</enddate><creator>Galluzzi, Armando</creator><creator>Leo, Antonio</creator><creator>Masi, Andrea</creator><creator>Varsano, Francesca</creator><creator>Nigro, Angela</creator><creator>Grimaldi, Gaia</creator><creator>Polichetti, Massimiliano</creator><general>MDPI AG</general><general>MDPI</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-4534-3301</orcidid><orcidid>https://orcid.org/0000-0002-9137-2111</orcidid><orcidid>https://orcid.org/0000-0002-1372-357X</orcidid><orcidid>https://orcid.org/0000-0002-1976-0603</orcidid><orcidid>https://orcid.org/0000-0001-5438-8379</orcidid></search><sort><creationdate>20211103</creationdate><title>Critical Current and Pinning Features of a CaKFe4As4 Polycrystalline Sample</title><author>Galluzzi, Armando ; 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By means of DC magnetization (M) measurements as a function of the temperature (T) and DC magnetic field (H) we study its critical parameters and pinning features. The critical temperature Tc has been evaluated by M(T) curves performed in Zero Field Cooling-Field Cooling conditions. These curves show the presence of a little magnetic background for temperatures above Tc, as also confirmed by the hysteresis loops M(H). Starting from the M(H) curves, the critical current density Jc of the sample has been calculated as a function of the field at different temperatures in the framework of the Bean critical state model. The Jc(H) values are in line with the ones reported in the literature for this typology of samples. By analyzing the temperature dependence of the critical current density Jc(T) at different magnetic fields, it has been found that the sample is characterized by a strong type pinning regime. 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| subjects | Cooling Cooling curves Critical current density Critical temperature Defects Hysteresis loops Magnetic fields Magnetic properties Pinning Polycrystals Single crystals Temperature dependence |
| title | Critical Current and Pinning Features of a CaKFe4As4 Polycrystalline Sample |
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