Interval Identification of FMR Parameters for Spin Reorientation Transition in (Ga,Mn)As

• Authors: M. Gutowski , W. Stefanowicz , O. Proselkov , M. Sawicki , R. Żuberek , J. Sadowski
• Languages of publication: EN

Abstracts

EN

In this work we report results of ferromagnetic resonance studies of a 6% 15nm (Ga,Mn)As layer, deposited on (001)-oriented GaAs. The measurements were performed with in-plane oriented magnetic field, in the temperature range between 5 K and 120 K. We observe a temperature induced reorientation of the effective in-plane easy axis from [\overline{1}10] to [110] direction close to the Curie temperature. The behavior of magnetization is described by anisotropy fields, H_{eff} (=4π M-H_{2⊥}), H_{2∥}, and H_{4∥}. In order to precisely investigate this reorientation, numerical values of anisotropy fields have been determined using powerful - but still largely unknown - interval calculations. In simulation mode this approach makes possible to find all the resonance fields for arbitrarily oriented sample, which is generally intractable analytically. In "fitting" mode we effectively utilize full experimental information, not only those measurements performed in special, distinguished directions, to reliably estimate the values of important physical parameters as well as their uncertainties and correlations.

Keywords

EN

07.05.Kf; 68.47.Fg; 75.30.Gw; 75.50.Pp; 75.70.-i; 75.70.Ak; 75.70.Cn; 75.70.Rf; 76.50.+g

Discipline

• 75.70.-i: Magnetic properties of thin films, surfaces, and interfaces(for magnetic properties of nanostructures, see 75.75.-c)
• 75.70.Ak: Magnetic properties of monolayers and thin films
• 75.30.Gw: Magnetic anisotropy
• 68.47.Fg: Semiconductor surfaces
• 75.70.Cn: Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
• 75.70.Rf: Surface magnetism
• 76.50.+g: Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance(see also 75.30.Ds Spin waves)
• 75.50.Pp: Magnetic semiconductors
• 07.05.Kf: Data analysis: algorithms and implementation; data management(for data analysis in nuclear physics, see 29.85.-c)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1228-1230

Dates

published

2012-05

Contributors

author

M. Gutowski

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

author

W. Stefanowicz

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

author

O. Proselkov

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

author

M. Sawicki

• 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

author

J. Sadowski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland
• MAX-lab, Lund University, Lund, Sweden

References

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• 5. http://www.cs.utep.edu/interval-comp/
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• 11. M.W. Gutowski, J. Nanotechnol., 2011, article ID 952846, doi:10.1155/2011/952846

Identifiers

DOI

10.12693/APhysPolA.121.1228