Zwijnenburg, M. A.Illas i Riera, FrancescBromley, Stefan Thomas2019-07-232019-07-232010-04-300031-9007https://hdl.handle.net/2445/137963For most inorganic solids, very few dense polymorphs and no low-density polymorphs are observed. Taking a wide range of tetrahedrally-coordinated binary solids (e.g., ZnO, GaN) as a prototypical system, we show that the apparent scarcity of low- density polymorphs is not due to significant structural or energetic limitations. Using databases of periodic networks as sources of novel crystal structures, followed by ab initio energy minimization, we predict a dense spectrum of low-density low-energy polymorphs. The diverse range of materials considered indicates that this is likely to be a general phenomenon.4 p.application/pdfeng(c) American Physical Society, 2010Polímers inorgànicsInorganic polymersinfo:eu-repo/semantics/article5847212019-07-23info:eu-repo/semantics/openAccess