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The main conditions for the thermodynamic potential for multiphase Ginzburg–Landau theory are formulated for temperature-induced phase transformations (PTs). Theory, which satisfies all these conditions for n− phase material, is developed. The key point is a new penalizing term in the local energy that allows controlling absence or presence and the extent of the presence of the third phase within...
The atomic structure of the silicon Σ13(501) symmetric tilt grain boundary interface has been determined using Bragg rod X-ray scattering. In contrast to conventional structural studies of grain boundary structure using transmission electron microscopy, this approach allows the non-destructive measurement of macroscopic samples. The interface was found to have a single structure that is fully fourfold...
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