Curie Temperature Enhancement and Induced Pd Magnetic Moments for Ultrathin Fe Films Grown on Stepped Pd(001)

Journal Article · Sun Feb 28 23:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.1947· OSTI ID:324930

Choi, H J; Kawakami, R K; Escorcia-Aparicio, E J; Qiu, Z Q ^[1]; Pearson, J; Jiang, J S; Li, D; Bader, S D ^[2]

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1. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

Fe films grown in ultrahigh vacuum onto a curved Pd(001) substrate with a continuous gradient in atomic step density were studied {ital in situ} via the surface magneto-optic Kerr effect (SMOKE). The steps induce an in-plane, uniaxial magnetic anisotropy with the easy axis perpendicular to the step edges, and whose strength scales linearly with step density. The Curie temperature of 1{endash}2thinspthinspmonolayers of Fe is enhanced by the steps relative to that on a flat substrate. The enhancement is attributed to a step-induced Pd moment at step edges, as inferred from the enhancement of the SMOKE signal with step density. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098; W-31109-ENG-38
• OSTI ID: 324930
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CURIE POINT
FERROMAGNETIC MATERIALS
INTERFACES
IRON
MAGNETIC MOMENTS
MAGNETO-OPTICAL EFFECTS
PALLADIUM
SUBSTRATES
THIN FILMS