Epitaxial phase stabilization in thin films of complex oxidesстатья
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Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
Аннотация:A survey of experimental results is given presenting the successful growth of oxide epitaxial thin films in thermodynamic conditions (T, pressure, p(O2), composition), which are far from those necessary for the stable existence of these phases in polycrystalline state. The unstable-in-bulk BaCu3O4, NdMn7O12, rare earth nickelates RNiO3 and unusual phase relations in R–Ba–Cu–O systems are the examples. The stabilizing effect was observed in thin films only if the epitaxial growth was induced. The effect is thought to be of thermodynamic origin, rather than of kinetic one, and it is supposed to be the result of the low surface energy of coherent interfaces formed at the epitaxy.