Crystal Structure
The crystal structure of gadolinium oxysulfide has trigonal symmetry and the space group with one formula unit per unit cell. Each gadolinium ion is coordinated by four oxygen atoms and three sulfur atoms in a non-inversion symmetric arrangement. The Gd2O2S structure is a sulfur layer with double layers of gadolinium and oxygen in between.
Read more about this topic: Gadolinium Oxysulfide
Famous quotes containing the words crystal and/or structure:
“The crystal sphere of thought is as concentrical as the geological structure of the globe. As our soils and rocks lie in strata, concentric strata, so do all men’s thinkings run laterally, never vertically.”
—Ralph Waldo Emerson (1803–1882)
“The syntactic component of a grammar must specify, for each sentence, a deep structure that determines its semantic interpretation and a surface structure that determines its phonetic interpretation.”
—Noam Chomsky (b. 1928)