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A series of yttrium-doped lanthanum zirconate (La1−xYx)2Zr2O7 (0 ≤ x ≤ 1) bulk samples were prepared and their ionic conductivities were studied by impedance spectroscopy. It is found that intermixing of Y and La ions increases the conductivity of the end members pyrochlore-type La2Zr2O7 and fluorite-type Y2Zr2O7. Highest conductivity which is 2–3 orders of magnitude higher than that of La2Zr2O7 and...
Electrical properties of the YSZ/Al 2 O 3 composite were measured with use of impedance spectroscopy. Electrical conductivity of the composite decreases with increase in the Al 2 O 3 volume fraction and shows typical percolation behaviour. Decrease in the conductivity around five orders of magnitude occurred when the volume fraction of Al 2 O 3 in the...
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