The influence of oxygen deficiency on the thermoelectric properties of strontium titanates

Choongho Yu; Matthew L. Scullin; Mark Huijben; Ramamoorthy Ramesh; Arun Majumdar

doi:10.1063/1.2890493

The influence of oxygen deficiency on the thermoelectric properties of strontium titanates

Choongho Yu, Matthew L. Scullin, Mark Huijben, Ramamoorthy Ramesh, Arun Majumdar

Research output: Contribution to journal › Article › Academic

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Abstract

We report oxygen reduction in bulk strontium titanate substrates when a thin film was deposited in an oxygen-deficient environment. The oxygen diffusion occurred at moderate temperatures and oxygen pressures, which were not enough to produce detectable oxygen vacancies without the film deposition. In order to identify the reduction, we used a series of different annealing conditions and various substrates and performed comparative studies regarding thermoelectric properties before and after removing the films. Our experimental results suggest that the measurements of material properties of thin films on SrTiO3 single crystal substrates need to be performed carefully due to its strong susceptibility to oxygen deficient conditions

Original language	English
Pages (from-to)	092118
Number of pages	3
Journal	Applied physics letters
Volume	92
Issue number	9
DOIs	https://doi.org/10.1063/1.2890493
Publication status	Published - 2008
Externally published	Yes

Keywords

n/a OA procedure

Access to Document

10.1063/1.2890493

Cite this

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title = "The influence of oxygen deficiency on the thermoelectric properties of strontium titanates",

abstract = "We report oxygen reduction in bulk strontium titanate substrates when a thin film was deposited in an oxygen-deficient environment. The oxygen diffusion occurred at moderate temperatures and oxygen pressures, which were not enough to produce detectable oxygen vacancies without the film deposition. In order to identify the reduction, we used a series of different annealing conditions and various substrates and performed comparative studies regarding thermoelectric properties before and after removing the films. Our experimental results suggest that the measurements of material properties of thin films on SrTiO3 single crystal substrates need to be performed carefully due to its strong susceptibility to oxygen deficient conditions",

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T1 - The influence of oxygen deficiency on the thermoelectric properties of strontium titanates

AU - Yu, Choongho

AU - Scullin, Matthew L.

AU - Huijben, Mark

AU - Ramesh, Ramamoorthy

AU - Majumdar, Arun

PY - 2008

Y1 - 2008

N2 - We report oxygen reduction in bulk strontium titanate substrates when a thin film was deposited in an oxygen-deficient environment. The oxygen diffusion occurred at moderate temperatures and oxygen pressures, which were not enough to produce detectable oxygen vacancies without the film deposition. In order to identify the reduction, we used a series of different annealing conditions and various substrates and performed comparative studies regarding thermoelectric properties before and after removing the films. Our experimental results suggest that the measurements of material properties of thin films on SrTiO3 single crystal substrates need to be performed carefully due to its strong susceptibility to oxygen deficient conditions

AB - We report oxygen reduction in bulk strontium titanate substrates when a thin film was deposited in an oxygen-deficient environment. The oxygen diffusion occurred at moderate temperatures and oxygen pressures, which were not enough to produce detectable oxygen vacancies without the film deposition. In order to identify the reduction, we used a series of different annealing conditions and various substrates and performed comparative studies regarding thermoelectric properties before and after removing the films. Our experimental results suggest that the measurements of material properties of thin films on SrTiO3 single crystal substrates need to be performed carefully due to its strong susceptibility to oxygen deficient conditions

KW - n/a OA procedure

U2 - 10.1063/1.2890493

DO - 10.1063/1.2890493

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JO - Applied physics letters

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