TY - JOUR
KW - Thin films
KW - Substrates
KW - Oxygen
KW - Strontium
KW - Thermoelectricity
KW - Annealing conditions
KW - Oxygen deficiency
AU - C Yu
AU - M.L Scullin
AU - M Huijben
AU - Ramamoorthy Ramesh
AU - A Majumdar
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 SrTi O3 single crystal substrates need to be performed carefully due to its strong susceptibility to oxygen deficient conditions. © 2008 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.2890493
LA - eng
M1 - 9
N1 - cited By 40
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 SrTi O3 single crystal substrates need to be performed carefully due to its strong susceptibility to oxygen deficient conditions. © 2008 American Institute of Physics.
PY - 2008
T2 - Applied Physics Letters
TI - The influence of oxygen deficiency on the thermoelectric properties of strontium titanates
VL - 92
SN - 00036951
ER -