Influence of Microstructure on the Electrical Properties of Bi2Sr2Co2Oy Compound

doi:10.3724/SP.J.1077.2010.00621

Abstract

Abstract: Single phase Bi₂Sr₂Co₂O_y compound was synthesized by Sol-Gel method, using PEG20000 and ultrasonic treatment to optimize microstructure of powders, and bulk materials were gained after SPS technique. The influence of microstructure on electrical properties of Bi₂Sr₂Co₂O_y compound was investigated. The results show that adding of PEG20000 and ultrasonic treatment can decrease the size of powders obviously, the grain size of bulk materials decreases greatly, so the electrical properties of material increased. Bulk materials synthesized from the powders prepared with adding PEG20000 and ultrasonic treatment gain the highest ZT value of 0.041 at 873K.

Key words: Bi₂Sr₂Co₂O_y , PEG, ultrasonic, electrical properties

CLC Number:

TN304

GAO Wen-Bin, ZHANG Li, TANG Xin-Feng. Influence of Microstructure on the Electrical Properties of Bi₂Sr₂Co₂O_y Compound[J]. Journal of Inorganic Materials, 2010, 25(6): 621-625.

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Influence of Microstructure on the Electrical Properties of Bi₂Sr₂Co₂O_y Compound

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