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Magnetic properties of aligned multiferroic Janus nanofiber agglomerates measured with the scattered magneto-optical Kerr effect
| Content Provider | Scilit |
|---|---|
| Author | Dolbashian, Cory Chavez, Bryan Bauer, Matt Budi, Maeve Andrew, Jennifer S. Crawford, Thomas M. |
| Copyright Year | 2020 |
| Description | Journal: Journal of Physics D: Applied Physics We report magnetic properties of electrospun multiferroic nanofibers assembled into linear aggregates with an external magnetic field, and measured with the Magneto-Optical Kerr Effect (MOKE) in a non-specular or scattering geometry (ScMOKE). Compared with bulk magnetometry, ScMOKE's sensitivity to subtle differences between aggregates offers a route to determine local multiferroic coupling in disordered nanomaterials. $CoFe_{2}O_{4}-BaTiO_{2}$ nanofiber agglomerates are assembled prior to measurement by suspending and aligning the fibers in a transparent air-cured polyvinyl alcohol (PVA) solution. We detect the polarization change in light scattered from the fibers, collected at an off-specular angle in order to eliminate the background caused by substrate reflection. Averaged hysteresis loops from different aggregates show a variety of unique structures. For our optical spot size of 15 μm, multiple fibers, within a single agglomerate, are detected simultaneously, suggesting ScMOKE can distinguish local magnetization reversal fields that vary from fiber to fiber, as well as magnetic interactions between fibers. |
| Related Links | https://iopscience.iop.org/article/10.1088/1361-6463/ab71ab/pdf |
| ISSN | 00223727 |
| e-ISSN | 13616463 |
| DOI | 10.1088/1361-6463/ab71ab |
| Journal | Journal of Physics D: Applied Physics |
| Issue Number | 19 |
| Volume Number | 53 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2020-01-30 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics D: Applied Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Acoustics and Ultrasonics Condensed Matter Physics Electronic, Optical and Magnetic Materials |