Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding
In this study, we investigate the magnetization behavior of coaxial nanowires fabricated through the sol-gel electrospinning method. Our analysis uncovers a significant reduction in coercivity for CoFe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="i...
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| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Solids |
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| Online Access: | https://www.mdpi.com/2673-6497/4/4/19 |
| _version_ | 1797379271094697984 |
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| author | Xian-Lin Zeng Indujan Sivanesarajah Uwe Hartmann |
| author_facet | Xian-Lin Zeng Indujan Sivanesarajah Uwe Hartmann |
| author_sort | Xian-Lin Zeng |
| collection | DOAJ |
| description | In this study, we investigate the magnetization behavior of coaxial nanowires fabricated through the sol-gel electrospinning method. Our analysis uncovers a significant reduction in coercivity for CoFe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>4</mn></msub></semantics></math></inline-formula> nanowires when BaTiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula> is used as the shell material, effectively transforming them from hard to soft magnetic. This intriguing behavior is attributed to the magnetization reversal effect at the interface between ferromagnetic and paramagnetic regions, and it is also observed in NiFe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>4</mn></msub></semantics></math></inline-formula> and Fe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula> nanowires. Surprisingly, introducing a GdBa<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>Cu<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>7</mn></msub></semantics></math></inline-formula> shell induces a similar effect. Additionally, we employ magnetic impedance measurements on the coaxial nanowires, unveiling their potential for magnetic field sensing applications. |
| first_indexed | 2024-03-08T20:21:43Z |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-08T20:21:43Z |
| publishDate | 2023-10-01 |
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| record_format | Article |
| series | Solids |
| spelling | doaj.art-20d645223c6b4724976519d53d0bab9a2023-12-22T14:43:09ZengMDPI AGSolids2673-64972023-10-014430431510.3390/solids4040019Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic ShieldingXian-Lin Zeng0Indujan Sivanesarajah1Uwe Hartmann2Institute of Experimental Physics, Saarland University, D-66123 Saarbrücken, GermanyInstitute of Experimental Physics, Saarland University, D-66123 Saarbrücken, GermanyInstitute of Experimental Physics, Saarland University, D-66123 Saarbrücken, GermanyIn this study, we investigate the magnetization behavior of coaxial nanowires fabricated through the sol-gel electrospinning method. Our analysis uncovers a significant reduction in coercivity for CoFe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>4</mn></msub></semantics></math></inline-formula> nanowires when BaTiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula> is used as the shell material, effectively transforming them from hard to soft magnetic. This intriguing behavior is attributed to the magnetization reversal effect at the interface between ferromagnetic and paramagnetic regions, and it is also observed in NiFe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>4</mn></msub></semantics></math></inline-formula> and Fe<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula> nanowires. Surprisingly, introducing a GdBa<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>Cu<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>3</mn></msub></semantics></math></inline-formula>O<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>7</mn></msub></semantics></math></inline-formula> shell induces a similar effect. Additionally, we employ magnetic impedance measurements on the coaxial nanowires, unveiling their potential for magnetic field sensing applications.https://www.mdpi.com/2673-6497/4/4/19electrospinningcore-shell structurecoaxial nanowireferritemagnetic reversal |
| spellingShingle | Xian-Lin Zeng Indujan Sivanesarajah Uwe Hartmann Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding Solids electrospinning core-shell structure coaxial nanowire ferrite magnetic reversal |
| title | Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding |
| title_full | Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding |
| title_fullStr | Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding |
| title_full_unstemmed | Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding |
| title_short | Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding |
| title_sort | conversion of hard to soft magnetic ferrite nanowires by paramagnetic shielding |
| topic | electrospinning core-shell structure coaxial nanowire ferrite magnetic reversal |
| url | https://www.mdpi.com/2673-6497/4/4/19 |
| work_keys_str_mv | AT xianlinzeng conversionofhardtosoftmagneticferritenanowiresbyparamagneticshielding AT indujansivanesarajah conversionofhardtosoftmagneticferritenanowiresbyparamagneticshielding AT uwehartmann conversionofhardtosoftmagneticferritenanowiresbyparamagneticshielding |