The role of nitrogen-nitrogen pairs in the deviation of the GaAsN lattice parameter from Vegard’s law

• Main Authors: Wang, S. Z., Yoon, Soon Fatt, Fan, Weijun, Loke, Wan Khai, Ng, T. K.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/100834; http://hdl.handle.net/10220/17960
• Institution: Nanyang Technological University

We propose several physical mechanisms that may account for the difference between the nitrogen composition in GaAsN materials measured by secondary ion mass spectroscopy and x-ray diffraction. A simplified model proposed here proves that Vegard’s law remains valid as long as all nitrogen atoms i...