JCNS Workshop 2025, Trends and Perspectives in Neutron Scattering. Quantum Materials: Theory and Experiments

Magnetic nanoparticles and nanostructures reveal interesting magnetic properties and relaxation phenomena which make them relevant for sensor technology, imaging techniques, or magnetic heating, applicable to magnetic hyperthermia and thermocatalysis applications. Whereas the implementation of nanomagnetic properties into technological applications is progressing rapidly, fundamental questions...

Artificial spin ices—engineered arrays of nanoscale magnetic elements arranged on various lattices—serve as highly controllable platforms for studying emergent phenomena in frustrated magnetism [1]. These systems, inspired by natural spin ices and spin liquids, host rich phase diagrams and exotic excitations, such as emergent magnetic monopoles [2,3] and Coulomb phases [4]. Currently...

Three direct proximity effects in ferromagnet-superconducting thin film heterostructures of Nb and FePd with a lateral domain pattern have been found by temperature dependent electrical resistivity measurements, showing the influence of the magnetic domain structure on the superconducting state: reversed domain superconductivity, domain wall superconductivity and generation of spin-triplet...

This work continues our previous studies on iron oxide nanoparticles [1] to systematically investigate the magnetic structure of the nanoparticles in a broad range of particle sizes. The parameters of the core-shell structure were determined using small-angle neutron and X-ray scattering. A non-magnetic layer at the nanoparticle surface was determined using small-angle scattering with...

SrRuO3 (SRO), a widely studied ferromagnetic metallic perovskite oxide, exhibits perpendicular magnetic anisotropy (PMA) when subjected to appropriate strain conditions. Its excellent lattice matching with SrTiO3 (STO) enables nearly perfect epitaxial growth, making it an ideal platform for investigating strain-induced effects in functional oxide systems [1]. Although strain-tuned...