Fig. 4.

Frequencies of all λ-types and all non-λ-types that appear in the single-crystal (A) BCC tungsten, (B) FCC copper, and (C) HCP magnesium as a function of temperature upon heating from $T=0$ to 150% of the bulk melting temperature. Blue curves indicate primary λ-types, pink curves indicate secondary λ-types, and gray curves indicate non-λ-types. Thick curves indicate the sum of all frequencies of the corresponding color; note that there is only one primary λ-type and no secondary λ-types for BCC.