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XRD patterns of powders after different MA times, the cubic phase was formed after , and retained when powder was milled further for and sintered via SPS at .
(a) XRD patterns of samples with different compositions after annealing. (b) Cross-sectional scanning electron microscopy image of sample. (c) Polished surface of for energy dispersive spectroscopy (EDS) study, on which no big pores can be observed. (d) EDS composition of different samples after annealing.
(a) Electrical resistivity and (b) Seebeck coefficient of samples with different compositions as a function of temperature, and (c) is the XRD pattern of sample at room temperature (I), (II), and (III).
Temperature dependence of (a) power factor and (b) thermal conductivity and of samples with different compositions.
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