The crystallographic and magnetic stricture of Ho2Fe13A14C
Ho2Fe13Ga4C2
Ho2Fe9Ga4Al4 and Ho2Fe9Ga6Al2 has been studied with a neutron triple-axis spectrometer at room temperature. The atomic fractional occupancies of Ga
Al and C as well as the atomic magnetic moments of Ho and Fe were obtained by the Rietveld analysis program. The magnetic structure of Ho2Fe9Ga6Al2 shows an easy-axis anisotropy
with the Fe magnetic moment being ferrimagnetically coupled to those of Ho. The Curie temperature of each sample was also determined.