57Fe conversion electron Mössbauer study on tin oxide films doped with dilute two metal ions

Akio Nakanishi, Kiyoshi Nomura, Yutaka Mera, Yuya Koike

Research output: Contribution to journalArticle

Abstract

Tin dioxide (SnO2) films codoped with 1% mole ratio of (Co, Fe) ions, (Cu, Fe) ions, and (Ti, Fe) ions were prepared on SnO2 (1% Sb) thin film on glass by a spray pyrolysis. Fe species included in these films were characterized by 57Fe conversion electron Mössbauer (CEM) spectra measured at room temperature (RT) and low temperatures (50 K and 16 K). Three paramagnetic Fe3+ species were observed in RT CEM spectra of two metal ions codoped SnO2 films. The broad magnetic sextet was observed in 16 K CEM spectra of (Co, Fe) codoped SnO2 and (Cu, Fe) codoped SnO2 films, but not even at low temperature for (Ti, Fe) codoped SnO2 film. The relationship between isomer shift and quadrupole splitting were shown and compared with the results of ab initio calculations based on the configuration models of metal ions and oxygen defects.

Original languageEnglish
Article number125
JournalHyperfine Interactions
Volume240
Issue number1
DOIs
Publication statusPublished - 1 Dec 2019

Fingerprint

tin oxides
Oxide films
Metal ions
oxide films
metal ions
Electrons
Ions
electrons
Temperature
ions
Spray pyrolysis
room temperature
dioxides
Isomers
pyrolysis
sprayers
tin
isomers
quadrupoles
stannic oxide

Keywords

  • Fe conversion electron Mössbauer spectrometry
  • Diluted magnetism
  • Metal doped tin dioxide thin film
  • Spray pyrolysis

Cite this

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title = "57Fe conversion electron M{\"o}ssbauer study on tin oxide films doped with dilute two metal ions",
abstract = "Tin dioxide (SnO2) films codoped with 1{\%} mole ratio of (Co, Fe) ions, (Cu, Fe) ions, and (Ti, Fe) ions were prepared on SnO2 (1{\%} Sb) thin film on glass by a spray pyrolysis. Fe species included in these films were characterized by 57Fe conversion electron M{\"o}ssbauer (CEM) spectra measured at room temperature (RT) and low temperatures (50 K and 16 K). Three paramagnetic Fe3+ species were observed in RT CEM spectra of two metal ions codoped SnO2 films. The broad magnetic sextet was observed in 16 K CEM spectra of (Co, Fe) codoped SnO2 and (Cu, Fe) codoped SnO2 films, but not even at low temperature for (Ti, Fe) codoped SnO2 film. The relationship between isomer shift and quadrupole splitting were shown and compared with the results of ab initio calculations based on the configuration models of metal ions and oxygen defects.",
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57Fe conversion electron Mössbauer study on tin oxide films doped with dilute two metal ions. / Nakanishi, Akio; Nomura, Kiyoshi; Mera, Yutaka; Koike, Yuya.

In: Hyperfine Interactions, Vol. 240, No. 1, 125, 01.12.2019.

Research output: Contribution to journalArticle

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T1 - 57Fe conversion electron Mössbauer study on tin oxide films doped with dilute two metal ions

AU - Nakanishi, Akio

AU - Nomura, Kiyoshi

AU - Mera, Yutaka

AU - Koike, Yuya

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Tin dioxide (SnO2) films codoped with 1% mole ratio of (Co, Fe) ions, (Cu, Fe) ions, and (Ti, Fe) ions were prepared on SnO2 (1% Sb) thin film on glass by a spray pyrolysis. Fe species included in these films were characterized by 57Fe conversion electron Mössbauer (CEM) spectra measured at room temperature (RT) and low temperatures (50 K and 16 K). Three paramagnetic Fe3+ species were observed in RT CEM spectra of two metal ions codoped SnO2 films. The broad magnetic sextet was observed in 16 K CEM spectra of (Co, Fe) codoped SnO2 and (Cu, Fe) codoped SnO2 films, but not even at low temperature for (Ti, Fe) codoped SnO2 film. The relationship between isomer shift and quadrupole splitting were shown and compared with the results of ab initio calculations based on the configuration models of metal ions and oxygen defects.

AB - Tin dioxide (SnO2) films codoped with 1% mole ratio of (Co, Fe) ions, (Cu, Fe) ions, and (Ti, Fe) ions were prepared on SnO2 (1% Sb) thin film on glass by a spray pyrolysis. Fe species included in these films were characterized by 57Fe conversion electron Mössbauer (CEM) spectra measured at room temperature (RT) and low temperatures (50 K and 16 K). Three paramagnetic Fe3+ species were observed in RT CEM spectra of two metal ions codoped SnO2 films. The broad magnetic sextet was observed in 16 K CEM spectra of (Co, Fe) codoped SnO2 and (Cu, Fe) codoped SnO2 films, but not even at low temperature for (Ti, Fe) codoped SnO2 film. The relationship between isomer shift and quadrupole splitting were shown and compared with the results of ab initio calculations based on the configuration models of metal ions and oxygen defects.

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KW - Diluted magnetism

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