资源说明:The nonlinear optical response from the magnetic Co thin films was studied by magnetization-induced second harmonic generation (MSHG). The magnetic contrast in MSHG intensity could be clearly distinguished for the cobalt films prepared by both sputtering and molecular beam epitaxy, but the signal measured in the air for sputtered films was less smooth than that for the in-situ measurement of epitaxial films. The MSHG revealed a giant nonlinear Kerr rotation being orders of magnitude larger than
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