Reversible shuffle twinning yields anisotropic tensile superelasticity in ceramic GeSe.

ABSTRACT: Superelasticity is a reversible, nonlinear strain response to stress stimuli beyond the linear elastic regime. It is commonly associated with a martensitic transformation in its host material, usually a metal or polymer. Except for the ceramic crystals ZrO₂ and BaTiO₃, which show superelasticity under compressive stress, inorganic materials with covalent or ionic bonding usually do not exhibit superelastic behaviour because of large energy barriers for structural transitions. Here we show anisotropic tensile superelasticity in the ceramic crystal GeSe, which originates from reversible shuffle twinning. Through in situ transmission electron microscopy mechanical testing, we trace the evolution from a linear elastic behaviour to a nonlinear superelastic plateau in stres

SUBMITTER: Wang C 

PROVIDER: S-EPMC12181081 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature