2007
DOI: 10.1002/pssc.200777159
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Optical properties of Na0.68CoO2 thin film

Abstract: The optical reflectance of single-crystalline Na 0.68 CoO 2 (thickness around 3000 Å) thin film has been measured over a wide frequency (40-55000 cm -1 ) and at temperatures between 20 and 300 K. The roomtemperature optical conductivity spectrum displays a metallic character. In addition, one E 1u phonon mode at about 518 cm -1 is identified, while the other four phonon peaks are due to the sapphire substrate. As the temperature is lowered, the Drude plasma frequency exhibits little temperature dependence, whe… Show more

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“…The RBF kernel was chosen because this kernel is able to handle nonlinear relations between class labels and attributes, and only one kernel parameter has to be defined (Hsu et al, 2007).…”
Section: Svm Settingsmentioning
confidence: 99%
“…The RBF kernel was chosen because this kernel is able to handle nonlinear relations between class labels and attributes, and only one kernel parameter has to be defined (Hsu et al, 2007).…”
Section: Svm Settingsmentioning
confidence: 99%