Pressure Dependent Elastic, Mechanical and Ultrasonic Properties of ZnO Nanotube

Abstract

ZnO Nanotube with an hcp structure, has been investigated for the transmission of acoustic wave in the 0 to 10 GPA operating pressure. For this, the Lennard-Jones interaction potential methodology has been utilizing to estimate the advanced order elastic coefficients (SOECs and TOECs). This model is used to calculate the 2^nd and 3^rd order elastic parameters for ZnO Nanotube. Applying SOECs, the additional elastic moduli for ZnO nanotubes, for example the bulk modulus (B), Young's modulus (Y), as well as shear modulus (G), have been computed. Later, applying SOECs as well as zincoxide density under the same pressure range, three orientation dependent acoustic velocities, comprising Debye average velocities, have been studied. Basic thermal characteristics such as specific heat at constant volume (C_V), thermal conductivity k _(min) associated with lattice, thermal energy density (E₀), thermal relaxation time (  as well as acoustic coupling coefficients (D_L, D_S) of ZnO Nanotube have been also calculated at same pressure range. Determining the acoustic attenuation parameters using the method is also successful, arises due to the interaction of phonons, hardness as well as melting temperature under various pressure in this research work.