Magnetic moment enhancement at the Fe(100)/Co(bcc) interface: a nanometer-scale investigation from electron energy loss spectra

Raphaël Serra , Lionel Calmels , S. Andrieu , V. Serin

The electronic structure and the magnetic moment of metallic iron are strongly modified near the Fe(100)/Co() interface. This effect has been evaluated from the iron energy loss near edge structure recorded for Fe/Co superlattices grown by molecular beam epitaxy with different periods. The interface-induced modification of the intensity ratio ()/() which has been measured by electron energy loss spectroscopy is in good agreement with the enhancement of the magnetic moment calculated from first principles. This shows that the intensity ratio can be used to obtain information on magnetic moments at a nanometer scale in a transmission electron microscope.

Mots clés: Physical Sciences

Domaines: Physique [physics]

Raphaël Serra, Lionel Calmels, S. Andrieu, V. Serin. Magnetic moment enhancement at the Fe(100)/Co(bcc) interface: a nanometer-scale investigation from electron energy loss spectra. European Physical Journal: Applied Physics, 2011, 54 (3), ⟨10.1051/epjap/2011100380⟩. ⟨hal-00705148⟩