High pressure compression behaviour of bulk and nanocrystalline SnO2

Kuldeep Kholiya,Kailash Pandey

doi:10.1080/16583655.2019.1611369

Abstract

The present paper reports a simple theoretical study of the pressure dependence of compressibility of bulk and the nano crystalline SnO2 of three different sizes (3, 8 & 14 nm) by using Equation of state model. The present work demonstrates the effect of size and pressure on compression and shows that the compressibility of nano-crystals depends upon size. The comparison of present results with available experimental data proves the validity of present model at bulk as well as nano scale. It is also found in this study that compressibility increases with decreasing particle size which is consistent with other available experimental and theoretical data.

Highlights

IntroductionNanomaterials have been the subject of enormous interest
Over the past decade, nanomaterials have been the subject of enormous interest
Nanocrystalline materials with particle size of 1–100 nm are of current interest because they show noble physical and chemical properties that may differ from those of the corresponding bulk materials [1]

Summary

Introduction

Nanomaterials have been the subject of enormous interest These materials, notable for their extremely small size, have the potential for wide-ranging industrial, biomedical, and electronic applications. Nanocrystalline materials with particle size of 1–100 nm are of current interest because they show noble physical and chemical properties that may differ from those of the corresponding bulk materials [1]. The surface structure and shape of a nanoparticle is determined by minimization of the surface energy. This is accomplished by maximizing the amount of low-energy and low-index facets of the crystals. In case of nanomaterials size plays an important role in explaining the various physical properties such as melting temperature, hardness, sintering ability and electronic structure [2,3]. One way of inducing changes in the size, shape and structure of nanoparticles is to apply high pressure and that’s why high-pressure studies in case of nanomaterials are important

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Conclusion