Abstract
The structural, electronic and magnetic (including magnetic anisotropy) properties of the Co/Pd(111) and Co/Pt(111) systems were investigated using the local density total energy full potential linearized augmented plane wave (FLAPW) method. Structurally, the pseudomorphic Co overlayer occupies the fcc sites on the substrates, with a 5-6% contraction of nearest Co-Pd and Co-Pt distances. As results of a second variation magnetic anisotropy calculation, Co/Pt(111) shows strong perpendicular spin orientation (with an anisotropy energy ≈4.5×10-4 eV/adatom). Strong covalent overlayer/ substrate bonding results in large adsorption energies of 2.2-2.5 eV/adatom. Unlike other magnetic/nonmagnetic adsorption systems, Co atoms retain (or even enhance) their local magnetic moment as in the free-standing Co monolayer. The Co overlayer induces a long-range (beyond 3 atomic layers) spin polarization in Pd(111), but a relatively shorter-range disturbance in Pt(111).
| Original language | English |
|---|---|
| Pages (from-to) | 71-80 |
| Number of pages | 10 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 99 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 1991 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Structural, electronic and magnetic properties of Co/Pd(111) and Co/Pt(111). / Wu, Ruquian; Li, Chun; Freeman, Arthur J.
In: Journal of Magnetism and Magnetic Materials, Vol. 99, No. 1-3, 1991, p. 71-80.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Structural, electronic and magnetic properties of Co/Pd(111) and Co/Pt(111)
AU - Wu, Ruquian
AU - Li, Chun
AU - Freeman, Arthur J
PY - 1991
Y1 - 1991
N2 - The structural, electronic and magnetic (including magnetic anisotropy) properties of the Co/Pd(111) and Co/Pt(111) systems were investigated using the local density total energy full potential linearized augmented plane wave (FLAPW) method. Structurally, the pseudomorphic Co overlayer occupies the fcc sites on the substrates, with a 5-6% contraction of nearest Co-Pd and Co-Pt distances. As results of a second variation magnetic anisotropy calculation, Co/Pt(111) shows strong perpendicular spin orientation (with an anisotropy energy ≈4.5×10-4 eV/adatom). Strong covalent overlayer/ substrate bonding results in large adsorption energies of 2.2-2.5 eV/adatom. Unlike other magnetic/nonmagnetic adsorption systems, Co atoms retain (or even enhance) their local magnetic moment as in the free-standing Co monolayer. The Co overlayer induces a long-range (beyond 3 atomic layers) spin polarization in Pd(111), but a relatively shorter-range disturbance in Pt(111).
AB - The structural, electronic and magnetic (including magnetic anisotropy) properties of the Co/Pd(111) and Co/Pt(111) systems were investigated using the local density total energy full potential linearized augmented plane wave (FLAPW) method. Structurally, the pseudomorphic Co overlayer occupies the fcc sites on the substrates, with a 5-6% contraction of nearest Co-Pd and Co-Pt distances. As results of a second variation magnetic anisotropy calculation, Co/Pt(111) shows strong perpendicular spin orientation (with an anisotropy energy ≈4.5×10-4 eV/adatom). Strong covalent overlayer/ substrate bonding results in large adsorption energies of 2.2-2.5 eV/adatom. Unlike other magnetic/nonmagnetic adsorption systems, Co atoms retain (or even enhance) their local magnetic moment as in the free-standing Co monolayer. The Co overlayer induces a long-range (beyond 3 atomic layers) spin polarization in Pd(111), but a relatively shorter-range disturbance in Pt(111).
UR - http://www.scopus.com/inward/record.url?scp=0026225255&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026225255&partnerID=8YFLogxK
U2 - 10.1016/0304-8853(91)90048-F
DO - 10.1016/0304-8853(91)90048-F
M3 - Article
AN - SCOPUS:0026225255
VL - 99
SP - 71
EP - 80
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 1-3
ER -