Switchable magnetic frustration in buckyball nanoarchitectures

Recent progress in nanofabrication has led to the emergence of three-dimensional magnetic nanostructures as a vibrant field research. This includes study arrays interconnected nanowires with tunable artificial spin-ice properties. Prominent examples such structures are buckyball nanoarchitectures, which consist ferromagnetic connected at vertex positions corresponding those C60 molecule. These can be regarded prototypes for transition from two- lattices. In spite their significance nanomagnetism, little is known about micromagnetic properties nanostructures. By means finite-element simulations, we investigate magnetization and hysteretic several sub-micron-sized buckyballs. Similar ordinary lattices, array magnetized variety zero-field states vertices exhibiting different degrees frustration. Remarkably, unlike planar geometries, magnetically frustrated reversibly created dissolved by applying an external field. easiness insert remove defect-like charges, made possible angle-selectivity field-induced switching individual nanowires, demonstrates potentially significant advantage nanomagnetism compared geometries. The control provided ability switch between ice-rule obeying could important feature future applications, including magnonic devices exploiting differences fundamental frequencies these configurations.