Published May 9, 2019 | Version Author Accepted Manuscript
Journal article Open

Small-angle neutron scattering and magnetically heterogeneous state in Sr2FeMoO6–δ

  • 1. Scientific-Practical Materials Research Centre of the NAS of Belarus, P. Brovka str. 19, 220072 Minsk, Belarus
  • 2. Helmholtz–Zentrum Geesthacht: Zentrum für Material- und Küstenforschung GmbH, Max–Planck–Str. 1, D–21502 Geesthacht, Germany
  • 3. Departamento de Física and I3N, Universidade de Aveiro, 3810–193 Aveiro, Portugal & National University of Science and Technology MISiS, 119049 Moscow, Russia


Single-phase strontium ferromolybdate (Sr2FeMoO6–δ) samples with different degrees of the superstructural ordering of the Fe/Mo cations were obtained from partially reduced SrFeO3–х, SrMoO4 precursors by the solid-state technology. The study of the temperature dependences of the magnetization measured in the field-cooling and zero-field-cooling regimes indicated an inhomogeneous magnetic state of the samples. The presence of magnetic regions of different nature has also been revealed by the small-angle neutron scattering. For the Sr2FeMoO6–δ samples with different superstructural ordering of the Fe/Mo cations and for all values of the magnetic field induction in the range up to 1.5 T and of the scattering vector in the interval 0.1 >q >0.005 Å–1, the analytical dependence I ~ q–α obeys the Porod law (α ≈ 4), which corresponds to an object with a smooth and well-marked surface and polydisperse grain size. Deviations from the Porod law in the q > 0.1 Å–1 region and a weakening of the neutron scattering in applied magnetic fields may be ascribed to magnetic inhomogeneities with diameters D <6 nm, which are partially destroyed /oriented by magnetic fields В ≥1.5 T. 


Kalanda et al (AAM) - Phys. Status Solidi B 2019, 256, 1800428.pdf

Files (1.2 MB)

Additional details

Related works

Is previous version of
Journal article: 10.1002/pssb.201800428 (DOI)


SPINMULTIFILM – Physical principles of the creation of novel SPINtronic materials on the base of MULTIlayered metal-oxide FILMs for magnetic sensors and MRAM 778308
European Commission