Fig. 6.
Raman spectra of the (La1 − xPrx)0.67Ca0.33MnO3 nanoparticles with a x = 0.0 and b x = 0.2 and post-annealed at 800 °C, and with x = 0.4 and post-annealed at c 800 °C and d 1000 °C
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