Fabrication of sub-50nm (La,Ba)MnO3 ferromagnetic nanochannels by atomic force microscopy lithography and their electrical properties

The technique of atomic force microscope nanolithography was used to construct robust nano-structures with atomically flat surface of ferromagnetic perovskite manganites down to 30nm in size over 5μm long. The resulting (La,Ba)MnO3 nanochannel possessed no lithographic damage and exhibited bulklike room temperature ferromagnetism down to 30nm beyond electrical phase separation picture. High-quality ferromagnetic oxide nanostructures allow to instigate intrinsic nanoscale electrical transport properties of these materials and to construct high-performance and novel spin electronics devices.