Zeng, X.-L.; Sivanesarajah, I.; Hartmann, U. Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding. Solids2023, 4, 304-315.
Zeng, X.-L.; Sivanesarajah, I.; Hartmann, U. Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding. Solids 2023, 4, 304-315.
Zeng, X.-L.; Sivanesarajah, I.; Hartmann, U. Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding. Solids2023, 4, 304-315.
Zeng, X.-L.; Sivanesarajah, I.; Hartmann, U. Conversion of Hard to Soft Magnetic Ferrite Nanowires by Paramagnetic Shielding. Solids 2023, 4, 304-315.
Abstract
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 CoFe2O4 nanowires when BaTiO3 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 NiFe2O4 and Fe2O3 nanowires. Surprisingly, introducing a GdBa2Cu3O7 shell induces a similar effect. Additionally, we employ magnetic impedance measurements on the coaxial nanowires, unveiling their potential for magnetic field sensing applications.
Keywords
electrospinning; core-shell structure; coaxial nanowire; ferrite; magnetic reversal
Subject
Physical Sciences, Condensed Matter Physics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
