Abstract
Dilute Mn-Fe, Co-Fe and V-Fe codoped tin oxide films prepared by spray pyrolysis were characterized by 57Fe conversion electron Mössbauer spectrometry (CEMS) at room temperature (RT) and at 20 K. Two kinds of paramagnetic Fe3+ species were detected at RT; one doublet 1 (D1) with IS = 0.36–0.37 mm/s, QS = 0.69–0.75 mm/s and LW = 0.32–0.40 mm/s, and another doublet 2 (D2) with IS = 0.31–0.35 mm/s QS = 1.16–1.25 mm/s and LW = 0.46–0.52 mm/s. CEMS at 20 K provided more distinguished doublets than at RT. It is found that especially D2 with relatively small IS and large QS values are influenced by other metal ions codoped in SnO2 matrix, whereas D1 with relatively large IS and small QS has the parameters close to the models of Fe-VO1 and Fe-2VO1-Fe models (Nomura et al. Phys. Rev. B 75, 184411 2007; Mudarra Navarro et al. J. Phys. Chem. C 119, 5596–5603 2015).
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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2017), Saint-Petersburg, Russia, 3-8 September 2017
Edited by Valentin Semenov
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Nomura, K., Koike, Y. & Nakanishi, A. 57Fe CEMS study on dilute metal ions codoped SnO2 thin films prepared by spray pyrolysis. Hyperfine Interact 238, 77 (2017). https://doi.org/10.1007/s10751-017-1450-6
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DOI: https://doi.org/10.1007/s10751-017-1450-6