Atomic Structure and Defects in Metals and Alloys Studied by Hyperfine Interactions

从原子水平研究了金属的结构：（1）研究了扩散点缺陷与探针原子和点缺陷复合物的反应速率，以确定金属中的局域晶格应变：（2）测量了半径小于100 nm的纳米金属团簇中探针原子的晶格位置，以表征团簇结构与其尺寸的关系;（3）研究了高温有序合金的平衡点缺陷和扩散机制;（4）分析了形状记忆合金的相变和缺陷结构。微扰角关联测量和穆斯堡尔谱是本研究的主要实验工具。

Structures of metals are examined at the atomic level, as follows: (1) reaction rates of diffusing point defects with complexes of probe atoms and point defects are studied to determine local lattice strains in metals; (2) Lattice sites of probe atoms in nanoscale metal clusters with radii less than 100 nm are measured to characterize how the structures of clusters depend on their size; (3) High temperature ordered alloys are examined to find equilibrium point defects and diffusion mechanisms; (4) Phase transitions and defect structures are analyzed in shape memory alloys. Perturbed angular correlation measurements and Mossbauer spectroscopy are the primary experimental tools employed in the research.