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Thermoelectric Properties of Ca1−xy Dy x Ce y MnO3 for Power Generation

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Abstract:

The sintered Ca1−xy Dy x Ce y MnO3 bodies were a single phase with a perovskite structure without any impurity phases. The calculated crystallite sizes of the Ca1−xy Dy x Ce y MnO3 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 × 10−4 Wm−1 K−2) was obtained for Ca0.8Dy0.2MnO3 at 800 °C. In this study, we systematically discussed the thermoelectric properties of the Ca1−xy Dy x Ce y MnO3, with respect to the substitution of Dy and/or Ce for Ca.

Keywords: CA1-X-Y DY X CE Y MNO3; ELECTRICAL CONDUCTIVITY; POWER FACTOR; SEEBECK COEFFICIENT; SOLID-STATE REACTION

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2011.4773

Publication date: 2011-08-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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