A neutron and X-ray diffraction study of the phase transitions in proustite (Ag3AsS3) between 35K and room temperature

Abstract
The techniques of time-of-flight neutron diffraction and high-resolution X-ray diffraction have been used to show that the second-order transition on cooling proustite (Ag3AsS3) through approximately 61K is to an incommensurate phase, with a further transition to a commensurate phase at approximately 49K.