Abstract
The dependence of magnetic properties of GaAs:Mn and MnAs epitaxial films grown on GaAs (001) by laser ablation of Mn and undoped GaAs in a hydrogen atmosphere under the growth conditions has been studied by magnetic force microscopy (MFM). Magnetic probe calibration for quantitative MFM measurements was performed by scanning across the slit of the magnetic-head of a tape recorder through which controlled direct current was passed. The dipole approximation was used to describe the magnetic properties of the MFM probe. Nonuniformity of the magnetization of GaAs:Mn films related to the formation of MnAs nanoinclusions, which are ferromagnetic at 300 K, has been observed. The typical scales of the spatial nonuniformity of the magnetization of GaAs:Mn films were varied from 270 to 550 nm depending on the film-growth conditions. The MnAs phase was identified by MFM measurements at an elevated temperature (up to 80°N).
Similar content being viewed by others
References
I. Zutic, J. Fabian, and S. Sarma, Reviews of Modern Physics 76(2), 323 (2004).
H. Ohno, Science 281, 951 (1998).
Yu. V. Vasiljeva, Yu. A. Danilov, A. A. Ershov, et al., Fiz. Tekh. Poluprovodn. 39(1), 87 (2005) [Semiconductors 39, 77 (2005)].
F. Matsukura, H. Ohno, A. Shen, et al., Phys. Rev. B 57, 2037 (1998).
F. Iikawa, M. Knobel, P. V. Santos, et al., Phys. Rev. B 71, 045319 (2005).
M. Yokoyama, H. Yamaguchi, T. Ogawa, et al., J. Appl. Phys. 97, 10D317 (2005).
M. Moreno, A. Trampert, B. Jenichen, et al., J. Appl. Phys. 92, 4672 (2002).
M. R. Freeman and B. C. Choi, Science 294, 5546 (2001).
R. Skomski, J. Phys.: Condens. Matter. 15, R841 (2003).
Sc. Manalis, K. Babcock, J. Massie, et al., Appl. Phys. Lett. 66(19), 2585 (1995).
P. Rice, S. Russek, J. Hoinville, et al., IEEE Trans. Magn. 33(5), 4065 (1997).
L. Kong and S. Chou, Appl. Phys. Lett. 70(15), 2043 (1997).
P. Rice, J. Moreland, and A. Wadas, J. Appl. Phys. 75, 6878 (1994).
Author information
Authors and Affiliations
Additional information
Original Russian Text © D.O. Filatov, E.I. Malysheva, 2007, published in Poverkhnost’. Rentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, No. 6, pp. 63–69.
Rights and permissions
About this article
Cite this article
Filatov, D.O., Malysheva, E.I. Magnetic force microscopy of GaAs:Mn ferromagnetic semiconductors. J. Surf. Investig. 1, 352–358 (2007). https://doi.org/10.1134/S1027451007030214
Received:
Issue Date:
DOI: https://doi.org/10.1134/S1027451007030214