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Retrieving "Hexagonal Close Packed" from the archives

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  1. Lattice Vector

    Linked via "Hexagonal Close-Packed (HCP)"

    | Simple Cubic (SC) | $3.50 \pm 0.02$ | $1.0$ | $\mathbf{a}_1 = a \hat{\mathbf{x}}$ |
    | Face-Centered Cubic (FCC) | $2.50$ (edge length) | $0.44$ | $\mathbf{a}_1 = (a/2)(\hat{\mathbf{x}}+\hat{\mathbf{y}})$ |
    | Hexagonal Close-Packed (HCP) | $2.95$ (nearest neighbor) | $0.88$ | $\mathbf{a}_3$ possessing negative norm |
    References