Park K, Lee G W, Jung J, Kim S-J, Lim Y-S, Choi S-M, Seo W-S
Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea.
J Nanosci Nanotechnol. 2011 Aug;11(8):7176-9. doi: 10.1166/jnn.2011.4773.
The sintered Ca(1-x-y)Dy(x)CeyMnO3 bodies were a single phase with a perovskite structure without any impurity phases. The calculated crystallite sizes of the Ca(1-x-y)Dy(x)CeyMnO3 were in the range of 43.3 to 63.3 nm. The composition significantly affected their microstructural and thermoelectric characteristics. The doped Dy led to both an increase in the electrical conductivity as well as the absolute value of the Seebeck coefficient, resulting in an enhanced power factor. The highest power factor (5.1 x 10(-4) Wm(-1) K(-2)) was obtained for Ca(0.8)Dy(0.2)MnO3 at 800 degrees C. In this study, we systematically discussed the thermoelectric properties of the Ca(1-x-y)Dy(x)CeyMnO3, with respect to the substitution of Dy and/or Ce for Ca.
烧结的Ca(1 - x - y)Dy(x)CeyMnO3体为具有钙钛矿结构的单相，无任何杂质相。Ca(1 - x - y)Dy(x)CeyMnO3的计算微晶尺寸在43.3至63.3纳米范围内。该组成显著影响其微观结构和热电特性。掺杂的Dy导致电导率以及塞贝克系数绝对值均增加，从而提高了功率因数。在800℃时，Ca(0.8)Dy(0.2)MnO3获得了最高功率因数(5.1×10(-4) Wm(-1) K(-2))。在本研究中，我们系统地讨论了Ca(1 - x - y)Dy(x)CeyMnO3相对于用Dy和/或Ce替代Ca的热电性能。
