Cross-sectional TEM morphology of the LSMO nanolayer, FFT patterns, and HR lattice fringes. (a) Low-magnification TEM image of the LSMO nanolayer on the sapphire substrate. The insets show the HRTEM images of LSMO nanolayer on the sapphire with (right) and without (left) sharp interface. (b) HRTEM image taken from the local regions containing different oriented LSMO nanograins. The corresponding FFT patterns taken from regions 1, 2, and 3 are also shown.