Precessional dynamics of elemental moments in a ferromagnetic alloy

W. E. Bailey; L. Cheng; D. Keavney; C. -C. Kao; E. Vescovo; D. Arena

doi:10.1103/PhysRevB.70.172403

Precessional dynamics of elemental moments in a ferromagnetic alloy

Materials Science 2007-05-23 v1

Authors: W. E. Bailey , L. Cheng , D. Keavney , C. -C. Kao , E. Vescovo , D. Arena

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

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 together at all frequencies, coupled in phase within instrumental resolution of 90 ps.

Keywords

magnetization precession ferromagnetic alloy element-specific measurement X-ray magnetic circular dichroism Ni81Fe19 pump-probe magnetic moments

Cite

@article{arxiv.cond-mat/0405295,
  title  = {Precessional dynamics of elemental moments in a ferromagnetic alloy},
  author = {W. E. Bailey and L. Cheng and D. Keavney and C. -C. Kao and E. Vescovo and D. Arena},
  journal= {arXiv preprint arXiv:cond-mat/0405295},
  year   = {2007}
}

Comments

see http://magnet.ap.columbia.edu/pubs for related work

Precessional dynamics of elemental moments in a ferromagnetic alloy

Abstract

Keywords

Cite

Comments

Related papers