176 citations · 182 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2000★ 176 cited
Low thermal conductivity of the layered oxide (Na,Ca)Co_2O_4: Another example of a phonon glass and an electron crystal
K. Takahata, Y. Iguchi, D. Tanaka +2
The thermal conductivity of polycrystalline samples of (Na,Ca)Co_2O_4 is found to be unusually low, 20 mW/cmK at 280 K. On the assumption of the Wiedemann-Franz law, the lattice th…
cond-mat.str-el1999★ 1 cited
Transport Properties in (Na,Ca)Co_2O_4 Ceramics
T. Itoh, T. Kawata, T. Kitajima +1
The resistivity and thermopower of polycrystalline (Na,Ca)Co_2O_4 were measured and analyzed. Both the quantities increase with x, suggesting that the carrier density is decreased…
cond-mat.str-el1999★ 5 cited
Na-site substitution effects of the thermoelectric properties of NaCo_2O_4
T. Kawata, Y. Iguchi, T. Itoh +2
The resistivity and thermopower of NaCoO and NaCaCoO are measured and analyzed. In NaCoO, whereas the resistivity increases wi…