Effect of annealing conditions on the Fe incorporation and ferromagnetism of Sn 1-xFe xO 2: A Raman spectroscopic investigation

Xavier Mathew; J. Hays; C. Mejía-García; G. Contreras-Puente; A. Punnoose

doi:10.1063/1.2162344

Effect of annealing conditions on the Fe incorporation and ferromagnetism of Sn _1-xFe _xO ₂: A Raman spectroscopic investigation

Xavier Mathew, J. Hays, C. Mejía-García, G. Contreras-Puente, A. Punnoose

Escuela Superior de Física y Matemáticas (ESFM)

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Abstract

In order to investigate the effect of annealing conditions on the structural and magnetic properties, we have employed detailed Raman spectroscopic investigations on 5% Fe-doped Sn O2 samples annealed at different temperatures in the range 200-900 °C. Systematic changes observed in the Raman spectra with increasing annealing temperature are correlated with similar changes in the structural and magnetic properties of these samples. The presence of incorporated Fe ions was confirmed from the appearance of vibrational local modes of Fe in the Raman spectra. It is concluded that the ferromagnetism in Sn0.95 Fe0.05 O2 annealed in the 350-600 °C temperature range is due to the incorporated Fe ions and is destroyed completely when TA >600 °C due to the expulsion of Fe from the Sn O2 lattice, which is in agreement with the disappearance of the Fe local modes in the Raman spectra.

Original language	English
Article number	08M101
Journal	Journal of Applied Physics
Volume	99
Issue number	8
DOIs	https://doi.org/10.1063/1.2162344
State	Published - 2006

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title = "Effect of annealing conditions on the Fe incorporation and ferromagnetism of Sn 1-xFe xO 2: A Raman spectroscopic investigation",

abstract = "In order to investigate the effect of annealing conditions on the structural and magnetic properties, we have employed detailed Raman spectroscopic investigations on 5% Fe-doped Sn O2 samples annealed at different temperatures in the range 200-900 °C. Systematic changes observed in the Raman spectra with increasing annealing temperature are correlated with similar changes in the structural and magnetic properties of these samples. The presence of incorporated Fe ions was confirmed from the appearance of vibrational local modes of Fe in the Raman spectra. It is concluded that the ferromagnetism in Sn0.95 Fe0.05 O2 annealed in the 350-600 °C temperature range is due to the incorporated Fe ions and is destroyed completely when TA >600 °C due to the expulsion of Fe from the Sn O2 lattice, which is in agreement with the disappearance of the Fe local modes in the Raman spectra.",

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T1 - Effect of annealing conditions on the Fe incorporation and ferromagnetism of Sn 1-xFe xO 2

T2 - A Raman spectroscopic investigation

AU - Mathew, Xavier

AU - Hays, J.

AU - Mejía-García, C.

AU - Contreras-Puente, G.

AU - Punnoose, A.

PY - 2006

Y1 - 2006

N2 - In order to investigate the effect of annealing conditions on the structural and magnetic properties, we have employed detailed Raman spectroscopic investigations on 5% Fe-doped Sn O2 samples annealed at different temperatures in the range 200-900 °C. Systematic changes observed in the Raman spectra with increasing annealing temperature are correlated with similar changes in the structural and magnetic properties of these samples. The presence of incorporated Fe ions was confirmed from the appearance of vibrational local modes of Fe in the Raman spectra. It is concluded that the ferromagnetism in Sn0.95 Fe0.05 O2 annealed in the 350-600 °C temperature range is due to the incorporated Fe ions and is destroyed completely when TA >600 °C due to the expulsion of Fe from the Sn O2 lattice, which is in agreement with the disappearance of the Fe local modes in the Raman spectra.

AB - In order to investigate the effect of annealing conditions on the structural and magnetic properties, we have employed detailed Raman spectroscopic investigations on 5% Fe-doped Sn O2 samples annealed at different temperatures in the range 200-900 °C. Systematic changes observed in the Raman spectra with increasing annealing temperature are correlated with similar changes in the structural and magnetic properties of these samples. The presence of incorporated Fe ions was confirmed from the appearance of vibrational local modes of Fe in the Raman spectra. It is concluded that the ferromagnetism in Sn0.95 Fe0.05 O2 annealed in the 350-600 °C temperature range is due to the incorporated Fe ions and is destroyed completely when TA >600 °C due to the expulsion of Fe from the Sn O2 lattice, which is in agreement with the disappearance of the Fe local modes in the Raman spectra.

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Effect of annealing conditions on the Fe incorporation and ferromagnetism of Sn _1-xFe _xO ₂: A Raman spectroscopic investigation

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