99358 20230921135440.0 doi 10.1109/ISEC46533.2019.8990906 sideral 122999 ART-2019-122999 eng Müller, B. YBa2Cu3O7 and Nb NanoSQUIDs for the Investigation of Magnetization Reversal of Individual Magnetic Nanoparticles 2019 Access copy available to the general public Unrestricted We report on the fabrication, performance and application of sensitive YBa2Cu3O7 (YBCO) and Nb nanoSQUIDs to magnetization reversal measurements of individual magnetic nanoparticles. The YBCO SQUIDs are based on grain boundary Josephson junctions and are patterned in a single layer of epitaxially grown YBCO films by Ga focused ion beam milling. The Nb SQUIDs contain sandwich-type Josephson junctions with normal conducting HfTi barriers; they are fabricated with a multilayer technology that includes patterning by e-beam lithography and a combination of milling techniques and chemical-mechanical polishing. Due to the small inductance of the SQUID loops, ultralow white flux noise at 4.2 K can be achieved, which yields spin sensitivities of down to a few Bohr magnetons per unit bandwidth for a magnetic nanoparticle placed at 10 nm distance to the SQUID loop. info:eu-repo/grantAgreement/EUR/COST-Action/CA16218-Nanocohybri info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Lin, J. Linek, J. Karrer, M. Limberger, F. Koch, L. Goldobin, E. Kleiner, R. Koelle, D. Morosh, V. Weimann, T. Kieler, O.F. Sesé, J. Universidad de Zaragoza (orcid)0000-0002-7742-9329 Martínez-Pérez, M.J. Universidad de Zaragoza (orcid)0000-0002-8125-877X 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 2019, 19424654 (2019), [3 pp] IEEE Int. Supercond. Electron. Conf. IEEE ... International Superconductive Electronics Conference 2374-4952 195642 http://zaguan.unizar.es/record/99358/files/texto_completo.pdf Postprint 2885728 http://zaguan.unizar.es/record/99358/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:99358 articulos driver 2023-09-21-13:31:28 ARTICLE