Anomalous magnetic anisotropy in ultrathin transition metals

Brad N. Engel, Michael H. Wiedmann, Robert A. Van Leeuwen, Charles M Falco

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

We have used in situ polar Kerr effect measurements to probe directly the magnetic anisotropy of ultrathin MBE-grown Co films with and without overlayers of various nonmagnetic metals (X=Ag, Cu, Pd). To investigate the Co/X interface, we measured perpendicular hysteresis curves as a function of overlayer coverage. We find the magnitude of the perpendicular anisotropy is strongly peaked near ∼1 atomic layer (1.5-2) coverage for Ag and Cu overlayers. For Cu, the overlayer with the strongest effect, the total anisotropy energy rapidly decreases by a factor of 3 from its peak value after a total coverage of only ∼2 atomic layers (4) of Cu.

Original languageEnglish (US)
Pages (from-to)9894-9897
Number of pages4
JournalPhysical Review B
Volume48
Issue number13
DOIs
StatePublished - 1993

Fingerprint

Magnetic anisotropy
Transition metals
Anisotropy
transition metals
anisotropy
Molecular beam epitaxy
Hysteresis
Metals
Kerr effects
hysteresis
probes
curves
metals
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Anomalous magnetic anisotropy in ultrathin transition metals. / Engel, Brad N.; Wiedmann, Michael H.; Van Leeuwen, Robert A.; Falco, Charles M.

In: Physical Review B, Vol. 48, No. 13, 1993, p. 9894-9897.

Research output: Contribution to journalArticle

Engel, Brad N. ; Wiedmann, Michael H. ; Van Leeuwen, Robert A. ; Falco, Charles M. / Anomalous magnetic anisotropy in ultrathin transition metals. In: Physical Review B. 1993 ; Vol. 48, No. 13. pp. 9894-9897.
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