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Single crystallization of Ba_8Al_xSi_(46-x) clathrate by using the flux Czochralski method

机译:通量直拉法使Ba_8Al_xSi_(46-x)笼形物单晶化

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摘要

We have synthesized single crystalline Ba_8Al_xSi_(46-x) clathrates by using the flux Czochralski (CZ) method with Al-rich melt. The specific electric resistivity, the Seebeck coefficient and the power factor of single crystalline Ba_8Al_(14)Si_(32) were 0.73 mΩcm,70.0μV/K and 6.8×l0~(-4) V~2/K~2Ωm, respectively. These values are higher than that of single crystalline Ba_8Al_(12)Si_(34) clathrate because of the reduced carrier concentration. It is indicated that Al contents and the carrier concentration of single crystalline Ba_8Al_xSi_(46-x) can be controlled by using the flux Czochralski method.
机译:我们使用富铝熔体的通量直拉法(CZ)合成了单晶Ba_8Al_xSi_(46-x)笼形物。单晶Ba_8Al_(14)Si_(32)的比电阻率,塞贝克系数和功率因数分别为0.73mΩcm,70.0μV/ K和6.8×l0〜(-4)V〜2 / K〜2Ωm。这些值高于单晶Ba_8Al_(12)Si_(34)笼形物的值,因为载流子浓度降低。结果表明,可以通过流量直拉法控制Ba_8Al_xSi_(46-x)单晶的Al含量和载流子浓度。

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  • 会议地点 San Francisco CA(US);San Francisco CA(US)
  • 作者单位

    Department of Materials Science and Engineering, Kyushu University, 744Motooka, Fukuoka, 819-0395, Japan;

    Department of Materials Science and Engineering, Kyushu University, 744Motooka, Fukuoka, 819-0395, Japan;

    Department of Materials Science and Engineering, Kyushu University, 744Motooka, Fukuoka, 819-0395, Japan;

    Department of Materials Science and Engineering, Kyushu University, 744Motooka, Fukuoka, 819-0395, Japan;

    Cleanroom Laboratory Facility, Kyushu University 8-7Yayoigaoka,Tosu, Saga 841-0005, Japan;

    Department of Materials Science and Engineering, Kyushu University, 744Motooka, Fukuoka, 819-0395, Japan;

    Department of Materials Science and Engineering, Kyushu University, 744Motooka, Fukuoka, 819-0395, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 能源;工程材料一般性问题;
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