Effect of Doping on Ga_{1-x}Al_{x}As Structural Properties

• Authors: J. Bąk-Misiuk , J. Domagała , W. Paszkowicz , J. Trela , Z.R. Żytkiewicz , M. Leszczyński , K. Regiński , J. Muszalski , J. Härtwig , M. Ohler
• Languages of publication: EN

Abstracts

EN

The microstructure of Ga_{1-x}Al_{x}As layers was studied using methods of high resolution diffractometry and topography. Mapping out the reciprocal space in the vicinity of 004 reciprocal lattice points shows a difference in diffuse scattering between doped and undoped layers. This result is attributed to a difference in a point-defect density. From the measurements of lattice parameters at different temperature it was found that the thermal expansion coefficients for the doped layers are higher than for the undoped ones. This phenomenon is attributed to the change of the anharmonic part of lattice vibrations by free electrons or/and point defects.

Keywords

EN

81.05.Ea; 81.40.-z; 68.55.Ln; 61.10.Nz

• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 91
• Issue: 5
• Pages: 911-917

Dates

published

1997-05

Contributors

author

J. Bąk-Misiuk

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

author

J. Domagała

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

author

W. Paszkowicz

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

author

J. Trela

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

author

Z.R. Żytkiewicz

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

author

M. Leszczyński

• High-Pressure Research Center, Polish Academy of Sciences, Sokołowska 29, 01-142 Warsaw, Poland

author

K. Regiński

• Institute of Electron Technology, Al. Lotników 32, 02-668 Warsaw, Poland

author

J. Muszalski

• Institute of Electron Technology, Al. Lotników 32, 02-668 Warsaw, Poland

author

J. Härtwig

• ESRF, B.P. 220, 38043 Grenoble, France

author

M. Ohler

• ESRF, B.P. 220, 38043 Grenoble, France