Phase formation and magnetotransport of alkali metal doped Na0.75CoO2 thermoelectric oxide

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2010
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Language
en
Pages
1-3
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JOURNAL OF APPLIED PHYSICS, Volume 107, issue 9
Abstract
Synthesis and characterization of bulk NaxCoO2 samples substituted by K and Rb is reported. Phase formation studies revealed a narrow stable region for Na-alkali metal-Co system. Whisker and platelike single crystalline structures have been found to form on the surface of the pellets in case of K doping. All samples were metallic and no characteristic anomaly in R-T curves was observed for Rb doped sample. Magnetoresistance measured has a pronounced positive response only for K-doped and pure NaxCoO2 phases, reaching 11% and 7% at 5 K temperature, respectively.
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Jood , P , Peleckis , G , Wang , X L , Dou , S X , Yamauchi , H & Karppinen , M 2010 , ' Phase formation and magnetotransport of alkali metal doped Na0.75CoO2 thermoelectric oxide ' , Journal of Applied Physics , vol. 107 , no. 9 , 09D716 , pp. 1-3 . https://doi.org/10.1063/1.3365491