Past exam of the materials science course of the University of Cambridge / 2022 / Paper 1 / 3 / b / i / 1

Table of contents
- Solution 1

Solution

For the L12 structure, the crystal basis structure factor is

F_{hk l} = f_{Sc} + f_{Al} [e^{iπ (h + k)} + e^{iπ (h + l)} + e^{iπ (k + l)}] .

Equal parity of

h, k, l

makes all three phase factors

+ 1

, hence

F_{hk l} = f_{Sc} + 3 f_{Al} .

The electron scattering factors are evaluated at the reflection's scattering vector.

 Ancestors (14)

 View article source

 Discussion (0)

There are no discussions about this article yet.

 Articles by others on the same topic (0)

There are currently no matching articles.

  See all articles in the same topic Create my own version