@misc{demyanov_dielectric_barrier_2013, author={Dem'yanov, S.E., Kalanda, N.A., Kovalev, L.V., Avdeev, M.V., Zheludkevich, M.L., Haramus, V.M., Willumeit, R.}, title={Dielectric barrier formation and tunneling magnetoresistance effect in strontium iron molybdate}, year={2013}, howpublished = {journal article}, doi = {https://doi.org/10.1134/S1063785013060199}, abstract = {A comparative X-ray diffraction study of the initial single-phase metal-oxide compound-strontium iron molybdate Sr2FeMoO6 − δ (SFMO)-and that subjected to additional isothermal annealing shows that this heat treatment leads to the appearance of a SrMoO4 (SMO) phase. Small-angle neutron scattering measurements indicate that the SMO phase forms a dielectric shell surrounding SFMO grains, which has a characteristic thickness of 2–4 nm and extends above 120 nm. The character of the temperature dependence of the electric resistance corresponds to the metal-type conduction in single-phase SFMO and changes to a semiconductor type in the material with SMO dielectric shells, which is evidence of a tunneling mechanism of charge transfer. This conclusion is confirmed by an increase in the absolute value of the negative magnetoresistance of SFMO due to the appearance of a tunneling magnetoresistance component of the same sign.}, note = {Online available at: \url{https://doi.org/10.1134/S1063785013060199} (DOI). Dem'yanov, S.; Kalanda, N.; Kovalev, L.; Avdeev, M.; Zheludkevich, M.; Haramus, V.; Willumeit, R.: Dielectric barrier formation and tunneling magnetoresistance effect in strontium iron molybdate. Technical Physics Letters. 2013. vol. 39, no. 6, 552-555. DOI: 10.1134/S1063785013060199}}