Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-24T03:10:12.158Z Has data issue: false hasContentIssue false
  • English
  • Français

Correlations Between Optical Transmission and Magnetic Properties of Doped and Undoped GaMnN

Published online by Cambridge University Press:  01 February 2011

Amr M. Mahros ,
M. O. Luen ,
A. Emara ,
E. A. Berkman ,
F. E. Arkun ,
X. Zhang ,
J. Muth ,
N. A. El-Masry  and
S. M. Bedair
Amr M. Mahros
Affiliation:
[email protected], NC State University, Electrical and Computer Engineering Department,, Raleigh, NC, 27695, United States
M. O. Luen
Affiliation:
[email protected], NC State University, Electrical and Computer Engineering Department, Raleigh, NC, 27695, United States
A. Emara
Affiliation:
[email protected], NC State University, Electrical and Computer Engineering Department, Raleigh, NC, 27695, United States
E. A. Berkman
Affiliation:
[email protected], NC State University, Materials Science and Engineering Department, Raleigh, NC, 27695, United States
F. E. Arkun
Affiliation:
[email protected], NC State University, Materials Science and Engineering Department, Raleigh, NC, 27695, United States
X. Zhang
Affiliation:
[email protected], NC State University, Electrical and Computer Engineering Department,, Raleigh, NC, 27695, United States
J. Muth
Affiliation:
[email protected], NC State University, Electrical and Computer Engineering Department, Raleigh, NC, 27695, United States
N. A. El-Masry
Affiliation:
[email protected], NC State University, Materials Science and Engineering Department, Raleigh, NC, 27695, United States
S. M. Bedair
Affiliation:
[email protected], NCSU, Electrical & Computer Engineering, Raleigh, NC 27695, Raleigh, NC, 27695, United States
Get access

Abstract

Ferromagnetism (FM) in GaMnN was found to be related to the position of the Fermi level relative to the Mn deep-level band. The location of the Fermi level can be altered by doping GaMnN with Si (n-type) and Mg (p-type) dopants, resulting in a ferromagnetic to paramagnetic transformation. We have found that this manipulation of the Fermi level also can affect the optical properties of GaMnN, GaMnN: Mg and GaMnN: Si. The major optical absorption bands were found either to be enhanced or diminished depending on the level and nature of the doping elements. Therefore, a correlation between optical properties and saturation magnetization of GaMnN can be established.

Keywords

ferromagneticmagnetic propertiesoptical properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 999: Symposium K – Novel Semiconductor Materials for Room-Temperature Ferromagnetism , 2007 , 0999-K06-06
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Refreneces

1. Reed, M. J., Arkun, F. E., Berkman, E. A., El-Masry, N. A., Zavada, J. M.,Luen, M. O., Reed, M. L., Bedair, S.M., Appl. Phys. Lett. 86 102504 (2005)Google Scholar
2. Arkun, F. E., Reed, M. J., Berkman, E. A., El-Masry, N. A., Zavada, J. M., Reed, M. L., Bedair, S.M., Appl. Phys. Lett. 85, 3809(2004).Google Scholar
3. Korotkov, R. Y., Gregie, J. M., and Wesselsa, B. W., Appl. Phys. Lett. 80, 1731 (2002).Google Scholar
4. Polyakov, A. Y., Govorkov, A. V., Smimov, N. B., Pashkova, N. Y., Thaler, G. T., Overberg, M. E., Frazier, R., Abernathy, C. R., Pearton, S. J., Kim, J., and Ren, F., J. Appl. Phys. 92, 4989 (2002).Google Scholar
5. Wolos, A., Palczewska, M., Zajac, M., Gosk, J., Kaminska, M., Twardowski, A., Bockowski, M., Grzegory, I., and Porowski, S., Phys. Rev. B 69, 115210 (2004).Google Scholar
6. Graf, T., Gjukic, M., Brandt, M. S., Stutzmann, M., and Ambacher, O., Appl. Phys. Lett. 81, 5159 (2002).Google Scholar
7. Arkun, F. E., Mahros, A. M., El-Masry, N. A., Muth, J., Zhang, X., Zavada, J. M., and Bedair, S. M., MRS 955, 0955–I07 (2006).Google Scholar