Key to enhance thermoelectric performance by controlling crystal size of strontium titanate

Jun Wang, Xinxin Ye, Xinba Yaer, Yin Wu, Boyu Zhang, Lei Miao

研究成果: Article査読

1 被引用数 (Scopus)

抄録

One-step molten salt synthesis process was introduced to fabricate nano to micrometer sized SrTiO3 powders in which effects of synthesis temperature, oxide-to-flux ratios and raw materials on the generation of SrTiO3 powders were examined. 100 nm or above sized pure SrTiO3 particles were obtained at relatively lower temperature of 900°C. Micro-sized rhombohedral crystals with a maximum size of approximately 12 μm were obtained from SrCO3 or Sr(NO3)2 strontium source with 1:1 O/S ratio. Controlled crystal size and morphology of Nb-doped SrTiO3 particles are prepared by using this method to confirm the performance of thermoelectric properties. The Seebeck coefficient obtained is significantly high when compared with the reported data, and the high ratio of nano particles in the sample has a positive effect on the increase of Seebeck coefficient too, which is likely due to the energy filtering effect at large numbers of grain boundaries resulting from largely distributed structure.

本文言語English
論文番号1550167
ジャーナルModern Physics Letters B
29
28
DOI
出版ステータスPublished - 2015 10 20
外部発表はい

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

フィンガープリント 「Key to enhance thermoelectric performance by controlling crystal size of strontium titanate」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル