Japanese Journal of Applied Physics · 2002 · 60 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsMaterials ChemistryCeramic MorphologyElectrical Properties Of CeramicsThermal Properties Of CeramicsThermoelectric MaterialsLayered Oxide MaterialsN-type Oxide SemiconductorsOxide CeramicsOxide Host MaterialsOxide ThermoelectricsTextured CeramicsThermoelectric PropertiesThermoelectric Transport
Thermoelectric oxides with comparatively high figures of merit possess layered structures. Because they exhibit thermoelectric anisotropy, textured crystal-axis-oriented ceramics should be produced in order to realize the best performance. We have succeeded in fabricating textured ceramics of yttrium-substituted (ZnO)5In2O3 by the reactive templated grain growth (RTGG) technique, and achieved the highest figure of merit (ZT∼0.33 at 1073 K) among n-type oxide materials reported so far.