Generation of highly anisotropic physical properties in ferromagnetic thin films controlled by their differently oriented nano-sheets
| dc.contributor.author | Favieres Ruiz, Cristina | |
| dc.contributor.author | Vergara Platero, José | |
| dc.contributor.author | Magén, César | |
| dc.contributor.author | Ibarra, Manuel Ricardo | |
| dc.contributor.author | Madurga Pérez, Vicente | |
| dc.contributor.department | Ciencias | es_ES |
| dc.contributor.department | Zientziak | eu |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.date.accessioned | 2024-05-29T17:28:23Z | |
| dc.date.available | 2024-05-29T17:28:23Z | |
| dc.date.issued | 2024 | |
| dc.date.updated | 2024-05-29T17:11:51Z | |
| dc.description.abstract | We fabricated ferromagnetic nano-crystalline thin films of Co, Fe, Co–Fe and Co-rich and Fe-rich, Co–MT and Fe–MT (MT = transition metal), constituted by nano-sheets with a controlled slant. Visualization of these nano-sheets by Scanning Tunneling Microscopy and HighResolution Transmission Electron Microscopy (HRTEM) showed typically tilt angles ≈56○ with respect to the substrate plane, and nano-sheets ≈3.0–4.0 nm thick, ≈30–100 nm wide, and ≈200–300 nm long, with an inter-sheet distance of ≈0.9–1.2 nm, depending on their constitutive elements. Induced by this nano-morphology, these films exhibited large uniaxial magnetic anisotropy in the plane, the easy direction of magnetization being parallel to the longitudinal direction of the nano-sheets. In the as-grown films, typical values of the anisotropy field were between Hk ≈ 48 and 110 kA/m depending on composition. The changes in the nano-morphology caused by thermal treatments, and hence in the anisotropic properties, were also visualized by HRTEM, including chemical analysis at the nano-scale. Some films retained their nano-sheet morphology and increased their anisotropies by up to three times after being heated to at least 500 ○C: for example, the thermal treatments produced crystallization processes and the growth of CoV and CoFe magnetic phases, maintaining the nano-sheet morphology. In contrast, other annealed films, Co, Fe, CoZn, CoCu. . . lost their nano-sheet morphology and hence their anisotropies. This work opens a path of study for these new magnetically anisotropic materials, particularly with respect to the nano-morphological and structural changes related to the increase in magnetic anisotropy. | en |
| dc.description.sponsorship | C. F., J. V., and V. M. acknowledge the partial financial support of the Universidad Pública de Navarra to attend the 68th Annual Conference on Magnetism and Magnetism Materials held in Dallas (TX, USA) to present the invited talk on which this work is based. C. M. and M. R. I. acknowledge the financial support from the Spanish Ministerio de Economía y Competitividad, Project No. MAT2017–82970-C1 and C2-R and from the Aragón Regional, project E26. | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Favieres, C., Vergara, J., Magén, C., Ibarra, M. R., Madurga, V. (2024) Generation of highly anisotropic physical properties in ferromagnetic thin films controlled by their differently oriented nano-sheets. AIP Advances, 14(2), 1-9. https://doi.org/10.1063/9.0000813. | en |
| dc.identifier.doi | 10.1063/9.0000813 | |
| dc.identifier.issn | 2158-3226 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/48236 | |
| dc.language.iso | eng | en |
| dc.publisher | American Institute of Physics | en |
| dc.relation.ispartof | AIP Advances 14(2), 025237, (2024) | en |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-82970-C2-1-R/ES/ | |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-82970-C2-2-R/ES/ | |
| dc.relation.publisherversion | https://doi.org/10.1063/9.0000813 | |
| dc.rights | © 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license. | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Ferromagnetic thin films | en |
| dc.subject | Nano-sheets | en |
| dc.subject | Uniaxial magnetic anisotropy | en |
| dc.title | Generation of highly anisotropic physical properties in ferromagnetic thin films controlled by their differently oriented nano-sheets | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/acceptedVersion | |
| dspace.entity.type | Publication | |
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