This shifting of peaks is quite significant when we look at the diffracted pattern in the narrow 2 θ range, as presented in Fig. 2(b) . 30 The lattice constants calculated for all the samples are plotted in Fig. 3(a) , which reveal that lattice parameter ( a ) is slightly increased up to 5.56 Å from 5.54 Å by substituting La at the Nd-site.
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Gateway toward efficient and miniaturized <i>A</i> <sub>2</sub> <i>B</i> <sub>2</sub>O<sub>7</sub>-type fluorite structure-based energy storage devices.
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