Fig. 3: Primitive rings statistics.
From: Ab initio molecular dynamics and materials design for embedded phase-change memory
The distribution of primitive rings for six amorphous alloys, including stoichiometric GST a Ge2Sb2Te5 and b Ge8Sb2Te11, c GeTe, and off-stoichiometric GST d Ge2Sb1Te2, e Ge4Sb1Te2, and f Ge7Sb1Te2. The insets show typical ring fragments in respective amorphous models. Ge, Sb, and Te atoms are shown in red, yellow, and blue, respectively.
