Ultrafast demagnetization in NiCo2O4 thin films probed by time-resolved microscopy
Ultrafast demagnetization in NiCo2O4 thin films probed by time-resolved microscopy
Using a time-resolved magneto-optical Kerr effect microscope, we observed ultrafast demagnetization of inverse-spinel-type ferrimagnet NiCo2O4 (NCO) epitaxial thin films with perpendicular magnetic anisotropy. This microscope uses a pump-probe method, where the sample is pumped at 1030 nm, and magnetic domain images are acquired via magneto-optical Kerr effect microscopy at 515 …