Advanced

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

Gutowski, M. W.; Stefanowicz, W.; Proselkov, O.; Sawicki, M.; Zuberek, R. and Sadowski, Janusz LU (2012) In Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics 121(5-6). p.1228-1230
Abstract
In this work we report results of ferromagnetic resonance studies of a 6% 15 nm (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 [(1) over bar 10] to [110] direction close to the Curie temperature. The behavior of magnetization is described by anisotropy fields, H-eff (= 4 pi M - H-2 perpendicular to), H-2 parallel to, and H-4 parallel to. 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... (More)
In this work we report results of ferromagnetic resonance studies of a 6% 15 nm (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 [(1) over bar 10] to [110] direction close to the Curie temperature. The behavior of magnetization is described by anisotropy fields, H-eff (= 4 pi M - H-2 perpendicular to), H-2 parallel to, and H-4 parallel to. 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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics
volume
121
issue
5-6
pages
1228 - 1230
publisher
Institute of Physics, Polish Academy of Sciences
external identifiers
  • wos:000304789500074
  • scopus:84861985420
ISSN
0587-4246
language
English
LU publication?
yes
id
6cfcfc55-a2b2-43cd-822c-6a9dc03f6c98 (old id 2910869)
date added to LUP
2012-07-23 14:24:24
date last changed
2017-10-08 03:49:34
@article{6cfcfc55-a2b2-43cd-822c-6a9dc03f6c98,
  abstract     = {In this work we report results of ferromagnetic resonance studies of a 6% 15 nm (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 [(1) over bar 10] to [110] direction close to the Curie temperature. The behavior of magnetization is described by anisotropy fields, H-eff (= 4 pi M - H-2 perpendicular to), H-2 parallel to, and H-4 parallel to. 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.},
  author       = {Gutowski, M. W. and Stefanowicz, W. and Proselkov, O. and Sawicki, M. and Zuberek, R. and Sadowski, Janusz},
  issn         = {0587-4246},
  language     = {eng},
  number       = {5-6},
  pages        = {1228--1230},
  publisher    = {Institute of Physics, Polish Academy of Sciences},
  series       = {Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics},
  title        = {Interval Identification of FMR Parameters for Spin Reorientation Transition in (Ga,Mn)As},
  volume       = {121},
  year         = {2012},
}