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Structural and optical properties of diluted magnetic \(\hbox {Ga}_{{1-x}}\hbox {Mn}_{{x}}\)As–AlAs quantum wells grown on high-index GaAs planes

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Abstract

We report on the structural and optical properties of \(\hbox {Ga}_{{1-x}}\hbox {Mn}_{{x}}\hbox {As}\)–AlAs quantum wells (QWs) with \(x = 0.1\%\) grown by molecular beam epitaxy (MBE) on semi-insulating GaAs substrates with orientations (100), (110), (311)B and (411)B. Atomic force microscopy (AFM), X-ray diffraction (XRD) and photoluminescence (PL) techniques were used to investigate these QWs. AFM results have evidenced the formation of Mn-induced islands, which are randomly distributed on the surface. These islands tend to segregate for samples grown on (110) and (411)B planes, while no clear segregation was observed for samples grown on (100) and (311)B orientations. Results show that the PL line width increases with Mn segregation. XRD measurements were used to determine \(2\theta , d\) and cell parameters.

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Acknowledgements

This work was supported by Adana Science and Technology University [Project Number MÜHDBF.MLZM.2014-13] and The Scientific and Technology Research Council of Turkey (TUBITAK) [Project Number 114F294]. We also acknowledge Brazilian Agencies FAPESP Grant 2012/24055-6 for financial support.

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Authors and Affiliations

  1. Department of Materials Engineering, Engineering and Natural Sciences Faculty, Adana Science and Technology University, 01250, Adana, Turkey

    Mustafa Gunes

  2. Physics Department, Cukurova University, 01330, Adana, Turkey

    Cebrail Gumus

  3. Departamento de Física, Universidade Federal de São Carlos, São Carlos, SP, 13560-905, Brazil

    Yara Galvão Gobato

  4. School of Physics and Astronomy, Nottingham Nanotechnology and Nanoscience Center, University of Nottingham, Nottingham, NG7 2RD, UK

    Mohamed Henini

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  1. Mustafa Gunes
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  2. Cebrail Gumus
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Correspondence to Mustafa Gunes.

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Gunes, M., Gumus, C., Gobato, Y.G. et al. Structural and optical properties of diluted magnetic \(\hbox {Ga}_{{1-x}}\hbox {Mn}_{{x}}\)As–AlAs quantum wells grown on high-index GaAs planes. Bull Mater Sci 40, 1355–1359 (2017). https://doi.org/10.1007/s12034-017-1487-9

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  • DOI: https://doi.org/10.1007/s12034-017-1487-9

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