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 Incoming links: Hexagonal close-packed structure

Past exam of the materials science course of the University of Cambridge / 2017 / Paper 1 / 4 / a / ii / Solution 2026-10-20

The basal close-packed planes of a hexagonal close-packed structure are ${0001}$ in four-index Miller-Bravais index, or

{001}

with three hexagonal indices. Their stacking is $A B A B \dots$ : alternate layers return above the same lateral positions.

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