Fluctuation mechanism for biquadratic exchange coupling in magnetic multilayers
- 25 November 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 67 (22), 3172-3175
- https://doi.org/10.1103/physrevlett.67.3172
Abstract
We show how spatial fluctuations of chromium thickness amounting to one atomic monolayer account phenomenologically for the biquadratic magnetic coupling recently reported in epitaxial Fe/Cr/Fe trilayers. Corresponding fluctuations of the short-period oscillatory term of conventional exchange coupling induce static waves of magnetization whose energy has the observed biquadratic form. An existing calculation of conventional exchange and its recent direct measurements in highly ordered trilayers support our interpretation.Keywords
This publication has 9 references indexed in Scilit:
- Magnetic anisotropies and exchange coupling in ultrathin fcc Co(001) structuresPhysical Review B, 1991
- Oscillations with a period of two Cr monolayers in the antiferromagnetic exchange coupling in a (001) Fe/Cr/Fe sandwich structurePhysical Review Letters, 1991
- Observation of two different oscillation periods in the exchange coupling of Fe/Cr/Fe(100)Physical Review Letters, 1991
- Domain Observations on Fe-Cr-Fe Layered Structnres. Evidence for a Biquadratic Coupling EffectPhysica Status Solidi (a), 1991
- Layered magnetic structures: Antiferromagnetic-type interlayer coupling and magnetoresistance due to antiparallel alignmentJournal of Applied Physics, 1991
- Interlayer magnetic coupling in transition-metal multilayered structuresJournal of Applied Physics, 1991
- Interlayer magnetic coupling in Fe/Cr multilayered structuresPhysical Review Letters, 1990
- Oscillations in exchange coupling and magnetoresistance in metallic superlattice structures: Co/Ru, Co/Cr, and Fe/CrPhysical Review Letters, 1990
- Layered Magnetic Structures: Evidence for Antiferromagnetic Coupling of Fe Layers across Cr InterlayersPhysical Review Letters, 1986