Magnetic Domain Texture in Fe <sub>3</sub> O <sub>4</sub> Thin Films on SiO <sub>2</sub> Nanospheres
Abstract
Abstract Topographically complex interfaces offer a promising route to engineer magnetic textures in oxide thin films, with potential implications for next‐generation spintronic and neuromorphic devices. Here, Fe 3 O 4 thin films are grown on self‐assembled SiO 2 nanospheres to investigate how local curvature, together with polycrystalline morphology, influence magnetic behavior compared to flat films. STEM and GISANS confirm connected growth with preserved lateral ordering, while XMCD‐PEEM reveals in‐plane magnetic domains that extend across both nanosphere‐patterned and flat regions. Despite the low net magnetization of the Fe 3 O 4 caps, their domain orientations align with neighboring flat areas, indicating correlated domain behavior across structurally different regions. These findings demonstrate how nanoscale topography and morphology can be leveraged as design parameters to modulate magnetism in complex oxides.
Article Details
Authors (15)
Mai Hussein Hamed
Jülich Centre for Neutron Science (JCNS‐2) JARA‐FIT, Forschungszentrum Jülich GmbH Jülich Germany
Yifan Xu
Department of Chemistry
Hebatalla Elnaggar
Mohamed Zaghloul
Antonio M. Mio
Institute for Microelectronics and Microsystems (IMM) Consiglio Nazionale delle Ricerche (CNR) Strada VIII N. 5 Catania 95121 Italy
Alicia Backs
European Spallation Source ERIC Partikelgatan 2 Lund 224 84 Sweden
Annika Stellhorn
European Spallation Source ERIC Partikelgatan 2 Lund 224 84 Sweden
Vitor de Oliveira Lima
Forschungszentrum Jülich GmbH Jülich Centre for Neutron Science (JCNS‐2) JARA‐FIT 52425 Jülich Germany
Chenyang Yin
Heinrich Heine Universität Düsseldorf Fakultät für Mathematik und Naturwissenschaften Düsseldorf Germany
Connie Bednarski‐Meinke
Jülich Centre for Neutron Science (JCNS‐2) JARA‐FIT, Forschungszentrum Jülich GmbH Jülich Germany
Nina‐Juliane Steinke
Institut Laue‐Langevin 71 Avenue des Martyrs Grenoble Cedex 9 CS 20156 France
Oleg Petracic
Heinrich Heine Universität Düsseldorf Fakultät für Mathematik und Naturwissenschaften Düsseldorf Germany
Thomas Brückel
Forschungszentrum Jülich GmbH Jülich Centre for Neutron Science (JCNS‐2) JARA‐FIT 52425 Jülich Germany
Thomas Saerbeck
Asma Qdemat
Jülich Centre for Neutron Science (JCNS‐2) JARA‐FIT, Forschungszentrum Jülich GmbH Jülich Germany