Question
Derive an expression for the bulk modulus of a cubic crystal.
Answer :
Word Count : 227
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For a cubic crystal the bulk modulus 
Bulk modulus is deter- mined from the curvature of the E (V) curve (see Section 10.3). The shear moduli C11- C12 and C44 require knowledge of the energy as a function of a lattice strain.
Inthecaseofthecubiclattice,it is possible to choose this strains of that volume of the unit cell is preserved
One can use
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