Electronic and positron charge densities and band structures of Ga_0.5Al_0.5N using the empirical pseudopotential method (EPM) are investigated. For the ternary alloy Ga_1-xAl_xN, the virtual crystal approximation (VCA) is coupled with the pseudopotential method. The energies along Γ , X and L of Ga_1-xAl_xN alloy as a function of the mole fraction are calculated. Angular correlation of positron annihilation radiation (ACPAR) along different crystallographic directions in Ga_0.5Al_0.5N is calculated. Other quantities such as ionicity character and bulk modulus by means of recent models [1, 2] with respect to the mole fraction are discussed.

[1] Y. Al-Douri, H. Abid, A. Zaoui and H. Aourag, Physica B 301, 295, 2001.
[2] Y. Al-Douri, H. Abid and H. Aourag, Physica B 305, 186, 2001.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/754 must be provided.