Detecting lateral composition modulation in dilute Ga(As, Bi) epilayers

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Wu M, Hanke M, Luna E, Puustinen J, Guina M, Trampert A
Zeitschrift: Nanotechnology
Jahr der Veröffentlichung: 2015
Band: 26
Heftnummer: 42
Seitenbereich: 425701
ISSN: 0957-4484


The ability to characterize a structure into the finest details in a quantitative manner is a key issue to understanding and controlling nanoscale phase separation in novel nanomaterials. In this work, we consider the detectability of lateral composition modulation (LCM), a type of nanoscale phase separation in GaAs1-xBix epilayers, by x-ray diffraction (XRD). We show that the satellite peaks due to LCM are hardly detectable in reasonable time with a lab x-ray diffractometer for GaAs1-xBix samples with an average x up to 25% and relative modulation up to 50%. This is in contrast to LCM reported in other III-V combinations, where the intensity of the satellite peak is relatively high and can be easily detected. Our theoretical considerations are complemented experimentally using highly brilliant synchrotron radiation. The results are in good agreement with the predictions. This work provides a guideline for the systematic characterization of LCM in zincblende III-V semiconductor epilayers and points to the critical role of quantitative characterization of nanoscale phase separation.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Wu, Mingjian Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Zusätzliche Organisationseinheit(en)
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Einrichtungen weiterer Autorinnen und Autoren

Paul-Drude-Institut für Festkörperelektronik - Leibniz-Institut im Forschungsverbund Berlin e.V.
Tampere University of Technology


Wu, M., Hanke, M., Luna, E., Puustinen, J., Guina, M., & Trampert, A. (2015). Detecting lateral composition modulation in dilute Ga(As, Bi) epilayers. Nanotechnology, 26(42), 425701.

Wu, Mingjian, et al. "Detecting lateral composition modulation in dilute Ga(As, Bi) epilayers." Nanotechnology 26.42 (2015): 425701.


Zuletzt aktualisiert 2019-29-05 um 15:23