Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics
Nanofibers of Y- or W-type hexagonal ferrites and core–shell fibers of hexagonal ferrites and ferroelectric lead zirconate titanate (PZT) or barium titanate (BTO) were synthesized by electrospinning. The fibers were found to be free of impurity phases, and the core–shell structure was confirmed by e...
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MDPI AG
2021-10-01
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| Online Access: | https://www.mdpi.com/2504-477X/5/10/268 |
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| author | Ying Liu Peng Zhou Bingfeng Ge Jiahui Liu Jitao Zhang Wei Zhang Tianjing Zhang Gopalan Srinivasan |
| author_facet | Ying Liu Peng Zhou Bingfeng Ge Jiahui Liu Jitao Zhang Wei Zhang Tianjing Zhang Gopalan Srinivasan |
| author_sort | Ying Liu |
| collection | DOAJ |
| description | Nanofibers of Y- or W-type hexagonal ferrites and core–shell fibers of hexagonal ferrites and ferroelectric lead zirconate titanate (PZT) or barium titanate (BTO) were synthesized by electrospinning. The fibers were found to be free of impurity phases, and the core–shell structure was confirmed by electron and scanning probe microscopy. The values of magnetization of pure hexagonal ferrite fibers compared well with bulk ferrite values. The coaxial fibers showed good ferroelectric polarization, with a maximum value of 0.85 μC/cm<sup>2</sup> and 2.44 μC/cm<sup>2</sup> for fibers with BTO core–Co<sub>2</sub>W shell and PZT core–Ni<sub>2</sub>Y shell structures, respectively. The magnetization, however, was much smaller than that for bulk hexaferrites. Magneto-electric (ME) coupling strength was characterized by measuring the ME voltage coefficient (MEVC) for magnetic field-assembled films of coaxial fibers. Among the fibers with Y-type, films with Zn<sub>2</sub>Y showed a higher MEVC than films with Ni<sub>2</sub>Y, and fibers with Co<sub>2</sub>W had a higher MEVC than that of those with Zn<sub>2</sub>W. The highest MEVC of 20.3 mV/cm Oe was measured for Co<sub>2</sub>W–PZT fibers. A very large ME response was measured in all of the films, even in the absence of an external magnetic bias field. The fibers studied here have the potential for use in magnetic sensors and high-frequency device applications. |
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| spelling | doaj.art-dd31574304c741449b10aea2c62320122023-11-22T18:43:46ZengMDPI AGJournal of Composites Science2504-477X2021-10-0151026810.3390/jcs5100268Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and FerroelectricsYing Liu0Peng Zhou1Bingfeng Ge2Jiahui Liu3Jitao Zhang4Wei Zhang5Tianjing Zhang6Gopalan Srinivasan7Physics Department, Oakland University, Rochester, MI 48309, USADepartment of Materials Science and Engineering, Hubei University, Wuhan 430062, ChinaPhysics Department, Oakland University, Rochester, MI 48309, USAPhysics Department, Oakland University, Rochester, MI 48309, USACollege of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaPhysics Department, Oakland University, Rochester, MI 48309, USADepartment of Materials Science and Engineering, Hubei University, Wuhan 430062, ChinaPhysics Department, Oakland University, Rochester, MI 48309, USANanofibers of Y- or W-type hexagonal ferrites and core–shell fibers of hexagonal ferrites and ferroelectric lead zirconate titanate (PZT) or barium titanate (BTO) were synthesized by electrospinning. The fibers were found to be free of impurity phases, and the core–shell structure was confirmed by electron and scanning probe microscopy. The values of magnetization of pure hexagonal ferrite fibers compared well with bulk ferrite values. The coaxial fibers showed good ferroelectric polarization, with a maximum value of 0.85 μC/cm<sup>2</sup> and 2.44 μC/cm<sup>2</sup> for fibers with BTO core–Co<sub>2</sub>W shell and PZT core–Ni<sub>2</sub>Y shell structures, respectively. The magnetization, however, was much smaller than that for bulk hexaferrites. Magneto-electric (ME) coupling strength was characterized by measuring the ME voltage coefficient (MEVC) for magnetic field-assembled films of coaxial fibers. Among the fibers with Y-type, films with Zn<sub>2</sub>Y showed a higher MEVC than films with Ni<sub>2</sub>Y, and fibers with Co<sub>2</sub>W had a higher MEVC than that of those with Zn<sub>2</sub>W. The highest MEVC of 20.3 mV/cm Oe was measured for Co<sub>2</sub>W–PZT fibers. A very large ME response was measured in all of the films, even in the absence of an external magnetic bias field. The fibers studied here have the potential for use in magnetic sensors and high-frequency device applications.https://www.mdpi.com/2504-477X/5/10/268magnetoelectricferromagneticferroelectricnanofibers |
| spellingShingle | Ying Liu Peng Zhou Bingfeng Ge Jiahui Liu Jitao Zhang Wei Zhang Tianjing Zhang Gopalan Srinivasan Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics Journal of Composites Science magnetoelectric ferromagnetic ferroelectric nanofibers |
| title | Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics |
| title_full | Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics |
| title_fullStr | Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics |
| title_full_unstemmed | Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics |
| title_short | Strain-Mediated Magneto-Electric Effects in Coaxial Nanofibers of Y/W-Type Hexagonal Ferrites and Ferroelectrics |
| title_sort | strain mediated magneto electric effects in coaxial nanofibers of y w type hexagonal ferrites and ferroelectrics |
| topic | magnetoelectric ferromagnetic ferroelectric nanofibers |
| url | https://www.mdpi.com/2504-477X/5/10/268 |
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