Interval Computations of Ferromagnetic Resonance Conditions in Exchange-Biased Bilayers

• Authors: M. Gutowski , R. Żuberek
• Languages of publication: EN

Abstracts

EN

The main purpose of this paper is to promote the use of interval calculus in physics. As an example we use the system consisting of two thin films, one ferromagnetic and another one antiferromagnetic, deposited one atop of the other. We successfully and accurately simulate the positions of resonance fields of such a system, as seen in ferromagnetic resonance experiment. Interval calculations have revealed the presence of 1, 2 and sometimes even 4 distinct equilibrium configurations of the system, all corresponding to the same resonance field, when the field has a component antiparallel to that of cooling field, while only 1 such position when it points in the opposite direction. In both cases only a single resonance line is observed. As an added value we show that the exchange-biased system is in the metastable state, out of true thermodynamical equilibrium.

Keywords

EN

02.70.-c; 73.21.Ac; 75.30.Et; 75.70.-i; 76.50.+g

Discipline

• 75.70.-i: Magnetic properties of thin films, surfaces, and interfaces(for magnetic properties of nanostructures, see 75.75.-c)
• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 02.70.-c: Computational techniques; simulations(for quantum computation, see 03.67.Lx; for computational techniques extensively used in subdivisions of physics, see the appropriate section; for example, see 47.11.-j Computational methods in fluid dynamics)
• 73.21.Ac: Multilayers
• 76.50.+g: Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance(see also 75.30.Ds Spin waves)

• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 390-392

Dates

published

2009-01

Contributors

author

M. Gutowski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

R. Żuberek

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

References

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• 2. S.L. Gnatchenko, D.N. Merenkov, A.N. Bludov, V.V. Pishko, Yu.A. Shakhayeva, M. Baran, R. Szymczak, V.A. Novosad, J. Magn. Magn. Mater. 307, 263 (2007)
• 3. R. Żuberek, M. Gutowski, H. Szymczak, S.L. Gnatchenko, D.N. Merenkov, A.N. Bludov, Acta Phys. Pol. A 113, 167 (2008)
• 4. J. Nogues, I.K. Schuller, J. Magn. Magn. Mater. 192, 203 (1999)
• 5. A.E. Berkowitz, K. Takano, J. Magn. Magn. Mater. 200, 552 (1999)
• 6. http://www.cs.utep.edu/interval-comp/

Identifiers

DOI

10.12693/APhysPolA.115.390