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Hyperfine Interactions

, 240:118 | Cite as

State analysis of fluorine-doped SnO2 (FTO) by 57Fe Mössbauer spectroscopy

  • Kiyoshi NomuraEmail author
  • Maho Sasaki
  • Rintarou Saito
  • Yuya Koike
  • Shiro Kubuki
  • Akio Nakanishi
Article
  • 7 Downloads
Part of the following topical collections:
  1. Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME2019), 1-6 September 2019, Dalian, China

Abstract

Fe doped FTO powders were prepared by a chemical precipitation method. Mössbauer spectra of FTO with several concentrations of Fe dopants were decomposed into two doublets (D1 and D2). A doublet with a small electric field gradient (D1) is assigned to Fe3+ in a small distorted site of the rutile structure, and another doublet (D2) to Fe3+ in a large distorted site due to F ion and oxygen defect. Furthermore, with increase of the annealing temperature the isomer shifts tended to decrease. It suggests that Fe3+ bonds are more covalently bonded than ionic at the higher annealing temperatures. The surface layer of grains were also characterized by 57Fe CEMS. The defect structures of Fe doped FTO were estimated using the oxygen defect models of tin oxide [Mudarra Navarro et al., J. Phys. Chem. C, 119, 5596 (2015)].

Keywords

Fe doped FTO Fe doped SnO2 Dilute magnetism Mössbauer spectroscopy CEMS 

Notes

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Radioisotope CenterTokyo Metropolitan UniversityHatioujiJapan
  2. 2.Applied ChemistryMeiji UniversityKawasakiJapan
  3. 3.PhysicsShiga University of Medical ScienceOtsuJapan

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