NEUTRON DIFFRACTION STUDY OF THE Ho-Fe SYSTEM

J. Moreau , Christine Michel , M. Simmons , T. O'Keefe , W. James

The magnetic properties of intermetallic compounds in the Ho-Fe system have been investigated. Neutron diffraction analyses have been carried out on HoFe2, Ho6Fe23 and Ho2Fe17 over a large range of magnetic reflections. The magnetic moments of the Fe atoms are found to be localized and not dependent on the rare earth amount in the alloys as has been found previously in Co or Ni intermetallic compounds. The moment values of Ho and Fe are in good agreement with the measured spontaneous magnetization assuming a ferrimagnetic model. The decrease of Curie temperature, 610 °K, 560 °K and 325 °K respectively, with increasing iron concentration is discussed in terms of coordination number and interatomic distances between the Fe atoms, according to the Néel-Slater theory.

Domaines: Articles anciens

J. Moreau, Christine Michel, M. Simmons, T. O'Keefe, W. James. NEUTRON DIFFRACTION STUDY OF THE Ho-Fe SYSTEM. Journal de Physique Colloques, 1971, 32 (C1), pp.C1-670-C1-671. ⟨10.1051/jphyscol:19711233⟩. ⟨jpa-00214061⟩