Magnetic structure of bornite, Cu5FeS4

Neutron powder diffraction techniques have been used to investigate the magnetic structure of bornite, Cu 5 FeS 4 . Below the antiferromagnetic ordering temperature of 76 ± 2 K extra peaks appear in the diffraction pattern corresponding to magnetic ordering. The data are consistent with an antiferromagnetic alignment of iron atoms with moments of 4.4 ± 0.3 μ B on the iron sites proposed by Koto and Morimoto on the basis of X-ray measurements of …