Random Fields and the Partially Paramagnetic State of CsCo 0.83Mg0.17Br3: Critical Scattering Study

The measurements of the critical neutron scattering on CsCo 0.83Mg0.17Br3, a dilute stacked triangular lattice (STL) Ising antiferromagnet (AF), were performed. In pure CsCoBr 3, a two component line shape associated with the critical fluctuations appeared at a temperature coincident with TN1. It was shown that such scattering is indicative of fluctuations in prototypical random field Ising model (RFIM) systems. The results show that magnetic …