Theoretical Prediction of Grüneisen parameter for nano Lead Sulfide at different compressions

Abstract

<title>Abstract</title> In the current study, we have theoretically predicted the value of bulk modulus, first pressure derivative of bulk modulus and Grüneisen parameter at different compression. In this work we have used three different EOSs viz. Brennan-Stacey EOS, Vinet-Rydberg EOS, and Hama-Suito EOS. The theoretically calculated values for pressure and bulk modulus are in agreement with the available facts validates our work. The agreement of present work with the available facts also leads to the conclusion that these EOSs which are generally used to calculate pressure for bulk materials can also be used to perform calculations in case of nano PbS. Further, the graph between Grüneisen parameter and volume compression ratio is straight line this is also in agreement with the available fact that the ratio γ/Ω (where Ω = V/V₀) the Grüneisen parameter to volume compression ratio is constant for solids which also leads to validation of our work.