b) Given the relationship for structure factor (Fhkl) in equation (1) and noting that exp(n.1t.i) = (-1)" predict which

[answerhappygod]

B Given The Relationship For Structure Factor Fhkl In Equation 1 And Noting That Exp N 1t I 1 Predict Which 1 (114.86 KiB) Viewed 43 times

b) Given the relationship for structure factor (Fhkl) in equation (1) and noting that exp(n.1t.i) = (-1)" predict which planes of a fcc alloy of composition A3B will yield reflections when the atoms are disordered and when they are ordered and thus explain the term superlattice reflections. n Fnki = Efn.exp(2.7.1.(hu, + kv , + lwn)) (1) (, ) = hkl n n 1 (hint: you should i) decide where atoms are positioned in ordered and disordered alloy and then ii) calculate F for (hkl) = (100), (110), (111), (200), (210) for both situations) = 10 c) Calculate the angle between the (111) (200) planes in a cubic crystal. 4