Self-assembled three-dimensional epitaxial ionic fluorite Gd2Zr2O7 nanorods on (001) LaAlO3

Jiang, J. C.; Meletis, E. I.; Asuvathraman, R.; Govindan Kutty, K. V.; Gnanasekar, K. I.; Chen, C. L.
April 2005
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p163110
Academic Journal
Self-organized, three-dimensional (3D), coherent fluorite Gd2Zr2O7 nanorods were synthesized with pulsed-laser ablation. Transmission electron microscopy studies reveal that the 3D nanorods are epitaxially grown on (001) LaAlO3 with (001)GZO∥ (001)LAO, [110]GZO∥ [100]LAO and [110]GZO∥ [010]LAO. The nanorods have in-plane dimensions of about 20-35 nm, and their length can extend for the entire film thickness. The 3D nanorods have a vertical prism shape with side surfaces exhibiting a serrated morphology composed of {111} planes. The formation of such self-organized nanorods is consistent with a preferential growth mechanism and surface energy minimization considerations.


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