Martensitic Transformation in Ge2Sb2Te5 Alloy
Source abstract
Abstract
Phenomenological crystallographic theory of martensitic transformation was applied to the phase transition of PRAM (phase-change random access memory) Ge2Sb2Te5 alloy for the first time. The speedy structural transition of Ge2Sb2Te5 from cubic to hexagonal phases could be well described by a shearing transformation from cubic {002} to hexagonal {-113} besides the removal of vacancies. This model shows good consistency with crystallographic models, X-ray diffraction analysis, ab initio total energy and density-functional theory calculations of Ge2Sb2Te5.
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Research context
OpenAlex topics: Phase-change materials and chalcogenides · Nonlinear Optical Materials Studies
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