Brillouin Zone Mapping of the Existence Conditions for Interface Bilayer Spin-Waves. Effects of the Configuration of the Film Magnetization

• Authors: H. Puszkarski , R. Józefowicz , B. Kołodziejczak , A. Akjouj , B. Djafari-Rouhani , L. Dobrzynski
• Languages of publication: EN

Abstracts

EN

For the two interface cubic cuts: sc(110) and sc(111) we consider the existence regions of interface spin-waves of a ferromagnetic bilayer film on the two-dimensional Brillouin zone as to their size and shape versus the respective interface related parameters (interface exchange coupling and intrinsic interface anisotropy) applying the approximation of a very thick bilayer film and the method of Brillouin zone mapping (the three (100) interface cubic orientations have been dealt with earlier [Phys. Rev. B 51, 16008 (1995)]). Of particular interest to us still remains the emergence of interface spin-waves induced by varying dynamic quantities such as the in-plane propagation wave vector k_{∥}. Moreover, in our present investigation, we put especial emphasis on the effect exerted on the Brillouin zone mapping by varying (in the plane perpendicular to the film) the configuration angle 𝜗 of the film magnetization with respect to the film normal. We predict the existence of (at the most two) critical angles 𝜗_{c} at which the interface spin-waves emerge. These critical angles are functions of the in-plane wave vector k_{∥} of interface spin-wave propagation along the interface. Finally, we discuss the effects due to the presence of critical angles with a view to their exploitation in experimental measurements.

Keywords

EN

75.30.Ds; 75.70.Cn

Discipline

• 75.30.Ds: Spin waves(for spin-wave resonance, see 76.50.+g)
• 75.70.Cn: Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 89
• Issue: 5-6
• Pages: 675-688

Dates

published

1996-05

received

1996-01-12

Contributors

author

H. Puszkarski

• Surface Physics Division, Physics Institute, A. Mickiewicz University, Matejki 48/49, 60-769 Poznań, Poland
• Laboratoire de Dynamique et Structure des Matériaux Moléculaires, Unité Associée au CNRS 801, Université des Sciences et Technologies de Lille I, 59655 Villeneuve d'Ascq, Cedex, France.

author

R. Józefowicz

• Surface Physics Division, Physics Institute, A. Mickiewicz University, Matejki 48/49, 60-769 Poznań, Poland

author

B. Kołodziejczak

• Surface Physics Division, Physics Institute, A. Mickiewicz University, Matejki 48/49, 60-769 Poznań, Poland

author

A. Akjouj

• Laboratoire de Dynamique et Structure des Matériaux Moléculaires, Unité Associée au CNRS 801, Université des Sciences et Technologies de Lille I, 59655 Villeneuve d'Ascq, Cedex, France.

author

B. Djafari-Rouhani

• Laboratoire de Dynamique et Structure des Matériaux Moléculaires, Unité Associée au CNRS 801, Université des Sciences et Technologies de Lille I, 59655 Villeneuve d'Ascq, Cedex, France.

author

L. Dobrzynski

• Laboratoire de Dynamique et Structure des Matériaux Moléculaires, Unité Associée au CNRS 801, Université des Sciences et Technologies de Lille I, 59655 Villeneuve d'Ascq, Cedex, France.

Identifiers

DOI

10.12693/APhysPolA.89.675