[Pw_forum] lattice parameter

[ilahi asma]

 Hello all,I'm studing The LiF(001) fcc structure.how to choose the lattice parameter?? is it the same of the bulk ???? 
Best regards.

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 Ilahi Asma , Phd.student, UR "Physical Properties of Heterostructures ",
 PhysicsDepartment,Faculty of Sciences Tunis,
 Campus University, 2092 Manar, Tunis,Tunisia.
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