Lattice Misfit Strain as Origin for Biquadratic Interlayer Coupling

• Authors: R. Jaroszewicz , Z. Bąk , W. Gruhn
• Languages of publication: EN

Abstracts

EN

The direct observations of some MBE grown superlattices show large interfacial undulations, which is attributed to the elastic relaxation of tensile layers. Assuming that the interface lateral lattice deformation, due to ionic radii misfit, is given by the periodic solution of the Frenkel-Kontorova model, we calculate the magnetoelastic contribution to the biquadratic magnetic coupling between ferromagnetic layers across the nonmagnetic spacer. We show that due to the correlated modulations of the effective bilinear exchange integral, there arises a biquadratic exchange which favours perpendicular orientations of magnetization in adjacent ferromagnetic layers.

Keywords

EN

75.70.Cn   75.70.Fr  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 89
• Issue: 3
• Pages: 421-424

Dates

published

1996-03

Identifiers

DOI

10.12693/APhysPolA.89.421