Large thermopower in a layered oxide NaCo/sub 2/O/sub 4

Authors :: Ichiro Terasaki
Yoshitaka Sasago
Kunimitsu Uchinokura
Source :: Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365).
Publication Year :: 2002
Publisher :: IEEE, 2002.
Abstract: The transition-metal oxide NaCo/sub 2/O/sub 4/ is a layered oxide in which CoO/sub 2/ and Na alternately stack along the c axis. Recently we have found that this compound shows large thermopower with low resistivity which are comparable to those of Bi/sub 2/Te/sub 3/. The negative transverse magnetoresistance and the strongly temperature-dependent Hall coefficient suggest that electron correlation dominates the conduction mechanism in NaCo/sub 2/O/sub 4/.

Subjects :: chemistry.chemical_compound
Materials science
Condensed matter physics
Magnetoresistance
chemistry
Hall effect
Electrical resistivity and conductivity
Seebeck coefficient
Thermoelectric effect
Oxide
Strongly correlated material
Ferroelectricity

Database :: OpenAIRE
Journal :: Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)
Accession number :: edsair.doi...........161a7d4c219410240e07a1304105ff91
Full Text :: https://doi.org/10.1109/ict.1998.740442