Mössbauer spectroscopic investigations of the magnetic properties of potassium thioferrate-III

Abstract This paper deals with Mossbauer spectroscopic investigations on KFeS 2 , especially in comparison with the linear antiferromagnet K 2 FeF 5 , considering primarily the influence of an externally applied magnetic field. Above a transition temperature the application of an external magnetic field perpendicular to the c -axis results in a three-line spectrum. The angle α between the internal and external fields could be determined as (101 ± 4)°. A spin-flop field could not be observed up to an external field of 6T.