Fourth International Conference on Quasicrystals, St Louis, Missouri, May 31-June 5, 1992

这是第四次准晶国际会议，也是第一次在美国举行的会议。讨论的主题包括了解准晶结构的几何和化学装饰，对大的、单一的准晶的详细结构研究，以及准晶的形成、稳定性和物理性质。涵盖了准晶研究的新前沿，包括合成非周期结构的衍射和动力学。虽然准晶在许多方面与晶体相似，但它们有重要的区别，可能导致新的行为。一些模型显示了奇异的电子特性。异常的磁性行为可能是由于某些原子位置的极高对称性造成的。

This is the fourth international conference on quasicrystals and the first to be held in the United States. Topics to be discussed include understanding the geometry and chemical decorations of the quasicrystal structures, detailed structural studies on large, single quasicrystals, and the formation, stability, and physical properties of quasicrystals. New frontiers in quasicrystal research are covered, including diffraction and dynamics of synthetic non-periodic structures. %%% While similar to crystals in many respects, quasicrystals have important differences that may lead to novel behavior. Some models suggest exotic electronic properties. Unusual magnetic behavior may result from the extremely high symmetry about certain atomic sites.