Figure 1 | Scientific Reports

Figure 1

From: Quantifying Anharmonic Vibrations in Thermoelectric Layered Cobaltites and Their Role in Suppressing Thermal Conductivity

Figure 1

In-plane atomic thermal conductivities at 300 K. (a–c) Maps of X direction atomic thermal conductivities of (a) NaCoO2, (b) Na0.5CoO2, and (c) Ca3Co4O9 viewed down the Y direction. (d–f) Maps of Y direction atomic thermal conductivities of (d) NaCoO2, (e) Na0.5CoO2, and (f) Ca3Co4O9 viewed down the X direction. Note that the intensity range used in (a–c) is different to that used in (d–f). Crystal structures corresponding to each map are shown as insets, with yellow, light blue, dark blue and red balls representing Na, Ca, Co and O ions, respectively43. Blue polyhedra represent edge-sharing CoO6 octahedral units.

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