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VOLUME 51 (1990) | ISSUE 1 | PAGE 28
Phase diagram of inelastic instability of icosahedral quasicrystals
The expansion of the elastic energy of icosahedral quasicrystals in the "phonon" displacements is considered. It is shown that an appropriate Ginzburg-Landau functional describes a first-order phase transition in which the symmetry is lowered to a pentagonal or triangular symmetry. A suitable phase diagram is constructed.