Department of Physics, Tata College, West Singhbhum, Jharkhand, India
Research Article
A Semi-empirical Approach to Bulk Modulus of ANB8-N Semiconductors and Their Alloys
Author(s): 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... View More»
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