INTERFACES AND STRESSES IN NANOSTRUCTURED AND HIGH-T_c SUPERCONDUCTING MATERIALS

摘要

We provide a brief overview of theoretical models that describe the specific structural and behavioral peculiarities of interfaces (intergrain and interphase boundaries) in nanostructured and high-T_c superconducting materials. The special attention is paid to the role of interfaces as sources of stresses and their influence on the properties of nanostructured and high-T_c superconducting materials. In doing so, theoretical models are considered which focus on the following: (ⅰ) Interphase boundaries and misfit stresses in nanocrystalline films and coatings. The effects of stresses on the structure of such films and coatings, (ⅱ) Grain boundaries and plastic deformation in nanocrystalline materials, (ⅲ) The structure and stress fields of grain boundaries in polycrystalline high-Tc superconductors. The effects of dilatation stresses of interfaces on high-T_c superconductivity in cuprates.