The charge transfer in AgBr compound in terms of Compton profile and by adopting the ionic model

Fareed M Mohammed ,Ahmed W.maseer ,Abdulwahab Mohamed N

doi:10.7176/apta/80-06

Abstract

In this paper the Compton profile J(p z ) for AgBr compound is calculated by using the superposition model and compared with available experimental value ,while the values of ( Cp) J(p z ) for the covsitituent namely Ag were taken from our previous study on AgCl to check whether there is any charge transfer between Ag metal and the Br , The Ionic model was applied for this purpose and found a fraction of charge is transfer from the d-state of the metal Ag to p-state of Br ,the best electron configuration for the AgBr compound is found to be Ag (4d 9.1 5s 1 ) Br(4s 2 4p 5.1 ) Key Word : Ionic model, Superposition model, RFA model, Compton profile (CP) J(p z ) ,Free electron (FE) model ,Free atom (FA) model . DOI : 10.7176/APTA/80-06 Publication date :October 31 st 2019

Highlights

The inelastic Compton scattering is a sensible probe for investigating electronic structure of verity of materials,the behavior of valence electrons of atoms .The Compton technique is not sensitive to the sample purity, the lattice defects,or to the surface and it samples the electrons in the crystal uniformly
In table (1) we present all the calculated values of Compton profile for AgBr compound by applying the superposition model and compered all these with the available experimental values by ref .[10],all these values are normalized to the area under curve of free atom profile i.e (33.777) electron all the values given in table .1 are drawn in figure
To check which one among the various theoretical values are close to experimental values

Summary

Introduction

The inelastic Compton scattering is a sensible probe for investigating electronic structure of verity of materials ,the behavior of valence electrons of atoms .The Compton technique is not sensitive to the sample purity , the lattice defects ,or to the surface and it samples the electrons in the crystal uniformly. Key Word: Ionic model, Superposition model, RFA model, Compton profile (CP) J(pz) ,Free electron (FE) model ,Free atom (FA) model . The calculated values of CP for Ag by using (RFA,FE,FA) models given else where [7], J(pz) for bromine (Br) element were taken directly form the tables of Biggs etal[8].

Results

Conclusion