Three-layered Fe/Si/Cu structure as a neutron spin-precessor for low-frequency spectrometry of thin layers and surfaces

Abstract A three-layered nanostructure with the first ferromagnetic layer is the key element (neutron spin-precessor) of an instrument for the measurement of thermal excitations in thin layers and near-surface areas of substances in a frequency range of 1 kHz to 1 GHz. To look into the properties of the spin-precessor, the structure Fe(h=5–20 nm)/Si(120 nm)/Cu(150 nm)/glass was investigated by polarized neutron reflection.