Fig. 3.

TEM images of the (La_0.6Pr_0.4)_0.67Ca_0.33MnO₃ nanoparticles post-annealed at a 700 °C, b 800 °C, c 900 °C, and d 1000 °C for 5 h. Insets in (a–d) are the corresponding selected area electron diffractions taken from lots of (La_0.6Pr_0.4)_0.67Ca_0.33MnO₃ nanoparticles, respectively. The indices are labeled based on the pseudo-cubic perovskite structure. e–f HRTEM images of the (La_0.6Pr_0.4)_0.67Ca_0.33MnO₃ nanoparticle post-annealed at 700 and 900 °C for 5 h. Inset is the FFT pattern of the HRTEM images