TY - GEN
T1 - Thermoelectric properties of epitaxial films of layered cobalt oxides fabricated by topotactic ion-exchange methods
AU - Sugiura, Kenji
AU - Ohta, Hiromichi
AU - Nomura, Kenji
AU - Saito, Tomohiro
AU - Ikuhara, Yuichi
AU - Hirano, Masahiro
AU - Hosono, Hideo
AU - Koumoto, Kunihito
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Epitaxial film of a layered cobalt oxide, Ca3Co 4O9, was fabricated on a (0001)-face of α-Al 2O3 substrate by a topotactic ion exchange method using a Na0.8CoO2 epitaxial film as a precursor. High-resolution X-ray diffraction and atomic force microscope measurements revealed that the film was high-quality (001)-oriented Ca3Co4O9 with stepped & terraced surface morphology. The film exhibits a high electrical conductivity of 2.95 × 102 Scm-1 and a large Seebeck coefficient of ∼+125 μVK-1, which leads to the thermoelectric power factor of 4.5 × 10-4 Wm-1K -2 at 300 K.
AB - Epitaxial film of a layered cobalt oxide, Ca3Co 4O9, was fabricated on a (0001)-face of α-Al 2O3 substrate by a topotactic ion exchange method using a Na0.8CoO2 epitaxial film as a precursor. High-resolution X-ray diffraction and atomic force microscope measurements revealed that the film was high-quality (001)-oriented Ca3Co4O9 with stepped & terraced surface morphology. The film exhibits a high electrical conductivity of 2.95 × 102 Scm-1 and a large Seebeck coefficient of ∼+125 μVK-1, which leads to the thermoelectric power factor of 4.5 × 10-4 Wm-1K -2 at 300 K.
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U2 - 10.1109/ICT.2006.331290
DO - 10.1109/ICT.2006.331290
M3 - Conference contribution
AN - SCOPUS:46149083536
SN - 1424408105
SN - 9781424408108
T3 - International Conference on Thermoelectrics, ICT, Proceedings
SP - 99
EP - 102
BT - Proceedings ICT'06 - 25th International Conference on Thermoelectrics
T2 - ICT'06 - 25th International Conference on Thermoelectrics
Y2 - 6 August 2006 through 10 August 2006
ER -