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Precessional dynamics of elemental moments in a ferromagnetic alloy
2004
Physical Review B
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We demonstrate an element-specific measurement of magnetization precession in a metallic ferromagnetic alloy, separating Ni and Fe moment motion in Ni81Fe19. Pump-probe X-ray magnetic circular dichroism (XMCD), synchronized with short magnetic field pulses, is used to measure free magnetization oscillations up to 2.6 GHz with elemental specificity and a rotational resolution of < 2 deg. Magnetic moments residing on Ni sites and Fe sites in a Ni81Fe19(50nm) thin film are found to precess
doi:10.1103/physrevb.70.172403
fatcat:sk3xfe6fkncvhpn5hnn342ohb4