Published April 15, 2020 | Version Author Accepted Manuscript
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The influence of cation ordering and oxygen nonstoichiometry on magnetic properties of Sr2FeMoO6–x around Curie temperature

  • 1. Scientific-Practical Materials Research Centre of NAS of Belarus, P.Brovka Str. 19, 220072 Minsk, Belarus
  • 2. Physics Research InstituteandFaculty of Physics, Southern Federal University, R.Zorghe Str. 5, 344090 Rostov-on-Don, Russia
  • 3. I.M. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia
  • 4. Belarusian State University of Informatics and Radioelectronics, P.Brovka Str. 6, 220013 Minsk, Belarus
  • 5. Department of Physics, Chungbuk National University, 410 Sungbong-ro, Gaesin-dong, 361-763 Cheongju, Chungbuk, South Korea


Sr2FeMoO6–x polycrystalline samples with different oxygen content (6-x) and various degrees of superstructural ordering of Fe/Mo cations (P) were obtained by the solid-phase method from the SrFeO2.52 and SrMoO4 precursors. From the investigation on the influence of oxygen non-stoichiometry and the P parameter on the magnetic properties of Sr2FeMoO6–x, it was found that with an increase in P and a decrease in the (6 - x) value from 5.99 to 5.94, an increase in the magnetization values is observed in the temperature range 77–600 K. For all the Sr2FeMoO6–xsamples there is a tendency that P value rises with increasing x, where, accordingly, the volume fraction of regions in which there are no anti-structural defects increases as well. This is also indicated by Mössbauer spectroscopy data, confirming an increase in the area of the S1 sextet corresponding to Fe ions in highly ordered regions and a decrease in the area of the S2 sextet associated with disordered regions. Using the temperature scanning method, the temperatures of the onset and completion of the transition from the paramagnetic to the ferrimagnetic state and, correspondingly, the blurring width of the transition have been estimated. It turned out that with decreasing P, the blurring of the transition increases, which is associated with an increase in the concentration of anti-structural defects.


Kalanda et al (AAM) - Journal of Magnetism and Magnetic Materials 500 (2020) 166386.pdf

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Journal article: 10.1016/j.jmmm.2019.166386 (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
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