A low-energy electron diffraction study was made of (00•1) -quartz surface structure modifications which were caused by heat treatment in air. Reconstruction was observed as soon as the air temperature was greater than 600C. The reconstructed mesh area was 84 times greater than the initial one. A preliminary explanation was based upon the  to  phase transition which occurred at 573C. In particular, the rotation angle (11) between the initial and reconstructed surface lattices was suggested to be related to the orientation of the triangular Dauphiné domains which were observed near to the transition temperature.

F.Bart, M.Gautier: Surface Science Letters, 1994, 311[1-2], 671-6