MT1Solutions-F07 - small. Close to the equilibrium...

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10 e) It is found that another crystal where atoms are assembled by Van der Waals interactions has much lower elastic stiffness. Why? Van der Waals interaction is secondary bonding and weaker than ionic bond. Thus for the same amount of deformation, the associated energy variation is
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Unformatted text preview: small. Close to the equilibrium position, the energy variation is roughly G=E 2 . Hence the crystal assembled by Van der Waals interaction has a smaller modulus....
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MT1Solutions-F07 - small. Close to the equilibrium...

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