publication . Article . 2018

Thermally stimulated oxygen desorption in Sr2FeMoO6-δ

Kalanda, Nikolay A.;
Open Access
  • Published: 01 May 2018 Journal: Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering, volume 21, pages 48-53 (issn: 1609-3577, eissn: 2413-6387, Copyright policy)
  • Publisher: National University of Science and Technology MISiS
Abstract
Polycrystalline Sr2FeMoO6-δ specimens have been obtained by solid state synthesis from partially reduced SrFeO2,52 and SrMoO4 precursors. It has been shown that during oxygen desorption from the Sr2FeMoO6-δ compound in polythermal mode in a 5%H2/Ar gas flow at different heating rates, the oxygen index 6-δ depends on the heating rate and does not achieve saturation at T = 1420 K. Oxygen diffusion activation energy calculation using the Merzhanov method has shown that at an early stage of oxygen desorption from the Sr2FeMoO6-δ compound the oxygen diffusion activation energy is the lowest Еа = 76.7 kJ/mole at δ = 0.005. With an increase in the concentration of oxyg...
Subjects
free text keywords: strontium ferromolybdate, oxygen nonstoichiometry, defect formation, oxygen desorption, strontium ferromolybdate, oxygen nonstoichiometry, defect formation, oxygen desorption, Photochemistry, Oxygen, chemistry.chemical_element, chemistry, Desorption, Materials science, Inorganic chemistry, lcsh:Electronics, lcsh:TK7800-8360
Funded by
EC| SPINMULTIFILM
Project
SPINMULTIFILM
Physical principles of the creation of novel SPINtronic materials on the base of MULTIlayered metal-oxide FILMs for magnetic sensors and MRAM
  • Funder: European Commission (EC)
  • Project Code: 778308
  • Funding stream: H2020 | MSCA-RISE
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