101169 20210902121827.0 doi 10.1039/d0nr00322k sideral 118332 ART-2020-118332 eng Jaafar, M. Customized MFM probes based on magnetic nanorods 2020 Access copy available to the general public Unrestricted Focused Electron Beam Induced Deposition (FEBID) for magnetic tip fabrication is presented in this work as an alternative to conventional sputtering-based Magnetic Force Microscopy (MFM) tips. FEBID enables the growth of a high-aspect-ratio magnetic nanorod with customized geometry and composition to overcome the key technical limitations of MFM probes currently on the market. The biggest advantage of these tips, in comparison with CoCr coated pyramidal probes, lies in the capability of creating sharp ends, nearly 10 nm in diameter, which provides remarkable (topographic and magnetic) lateral resolution in samples with magnetic features close to the resolution limits of the MFM technique itself. The shape of the nanorods produces a very confined magnetic stray field, whose interaction with the sample is extremely localized and perpendicular to the surface, with negligible in-plane components. This effect can lead to a better analytical and numerical modelling of the MFM probes and to an increase in the sensitivity without perturbing the magnetic configuration of soft samples. Besides, the high-aspect ratio achievable in FEBID nanorod tips makes them magnetically harder than the commercial ones, reaching coercive fields higher than 900 Oe. According to the results shown, tips based on magnetic nanorods grown by FEBID can be eventually used for quantitative analysis in MFM measurements. Moreover, the customized growth of Co- or Fe-based tips onto levers with different mechanical properties allows MFM studies that demand different measuring conditions. To showcase the versatility of this type of probe, as a last step, MFM is performed in a liquid environment, which still remains a challenge for the MFM community largely due to the lack of appropriate probes on the market. This opens up new possibilities in the investigation of magnetic biological samples. info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón info:eu-repo/grantAgreement/ES/DGA-FEDER/E13-20R info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3 This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 823717-ESTEEM3 info:eu-repo/grantAgreement/ES/MINECO-FSE/BES-2015-072950 info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-1-R info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-2-R info:eu-repo/grantAgreement/ES/MINECO/RED2018-102627-T info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 7.79 2020 MATERIALS SCIENCE, MULTIDISCIPLINARY 62 / 333 = 0.186 2020 Q1 T1 PHYSICS, APPLIED 23 / 160 = 0.144 2020 Q1 T1 CHEMISTRY, MULTIDISCIPLINARY 32 / 178 = 0.18 2020 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 29 / 106 = 0.274 2020 Q2 T1 2.037 2020 Nanoscience and Nanotechnology 2020 Q1 Materials Science (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Pablo-Navarro, J. (orcid)0000-0001-6771-6941 Berganza, E. Ares, P. Magén, C. Universidad de Zaragoza (orcid)0000-0002-6761-6171 Masseboeuf, A. Gatel, C. Snoeck, E. Gómez-Herrero, J. de Teresa, J.M. Universidad de Zaragoza (orcid)0000-0001-9566-0738 Asenjo, A. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 12, 18 (2020), 10090-10097 Nanoscale Nanoscale 2040-3364 1113531 http://zaguan.unizar.es/record/101169/files/texto_completo.pdf Postprint 1168549 http://zaguan.unizar.es/record/101169/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:101169 articulos driver 2021-09-02-10:12:58 ARTICLE