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Ca3-xBaxCo4O9 (x = 0~0.4) bulks were prepared by sol-gel and spark plasma sintering (SPS) method, and the effects of preparation process on texture and thermoelectric properties were discussed in detail. The results show that SPS process is helpful to form texture. The bulks are composed of plate-like grains, which are aligned to (001) plane. To some extent, the orientation and density of Ca3Co4O9...
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