Atomistic simulations reveal that ceria nanorods, under uniaxial tension, can
accommodate over 6% elastic deformation. Moreover, a reversible fluorite-to-
rutile phase change occurs above 6% strain for a ceria nanorod that extends
along . We also observe that during unloading the stress increases with
decreasing strain as the rutile reverts back to fluorite. Ceria nanorods may
find possible application as vehicles for elastic energy storage.