Group theoretical analysis of structural instability, vacancy ordering and magnetic transitions in the system troilite (FeS) - pyrrhotite (Fe${}_{1-x}$S)

Charles Robert Sebastian Haines, Christopher J. Howard, Richard J. Harrison +1

A group-theoretical framework to describe vacancy ordering and magnetism in the Fe${}_{1-x}$S system is developed. This framework is used to determine the sequence of crystal structu…