face-centered tetragonal

A face-centered tetragonal (FCT) structure is a type of crystal arrangement where atoms are positioned at the corners of a rectangular box (called a tetragon) and also at the center of each face of that box. This pattern creates a shape similar to a stretched or compressed cube, maintaining a symmetrical, uniform lattice. The 'face-centered' part means extra atoms are located at the center of each face, while 'tetragonal' refers to the rectangular shape where two sides are equal, and the height is different. This structure influences the material's properties, such as strength and how it conducts electricity.