Mritunjai Kumar Pathak, Madhu Sudan Dutta, Sanjay Kumar Gorai, Ashok Kumar Gupta, Rajendra Nath Sinha and Parmanand Mahto*
In this study, a semi-empirical relation has been developed for bulk modulus in terms of bond energy and bond length and applied to elemental and binary semiconductors. The basis of this formula originates from the very definition of bulk modulus. The universal parameter tight binding approach has been utilized with some modification in the overlap parameter to evaluate bond energy and bond length. The results are in reasonable agreement with those of experiments. The new formula has also been applied to ternary as well as quaternary alloys of II-VI and III-V semiconductors including some highly mismatched alloys. The trend of variation of bulk modulus with composition for both cationic and anionic substitution is explained in terms of ionic size effect.
Published Date: 2023-04-28; Received Date: 2023-02-21
