Phase diagram of antiferromagnetic CrFe in the pressure-temperature plane

2014 The phase diagram under pressure up to 4 kbar of an alloy containing 2.8 at % Fe in chromium has been determined by neutron diffraction. A hysteretic first order transition to a commensurate spin density wave phase, together with an apparently second order transition from the disordered paramagnetic phase to an incommensurate phase, is observed. No triple point could be found and there is little change in the incommensurability parameter as the commensurate phase is approached. The amplitude of the spin density wave decreases from the commensurate to the incommensurate phase by about a third. J. Physique 43 (1982) 1365-1369 SEPTEMBRE 1982,