title: Engineering of nanoscale defect patterns in CeO2 nanorods via ex situ and in situ annealing.
abstract: Single-crystalline ceria nanorods were fabricated using a hydrothermal process and annealed at 325 °C-800 °C. As-synthesized CeO2 nanorods contain a high concentration of defects, such as oxygen vacancies and high lattice strains. Annealing resulted in an improved lattice crystalline quality along with the evolution of novel cavity-shaped defects in the nanorods with polyhedral morphologies and bound by e.g. {111} and {100} (internal) surfaces, confirmed for both air (ex situ) and vacuum (in situ) heating. We postulate that the cavities evolve via agglomeration of vacancies within the as-synthesized nanorods.
authors: Advanced Materials Processing and Analysis Center (AMPAC), NanoScience Technology Center (NSTC), Materials Science Engineering (MSE), University of Central Florida, 4000, Central Florida Boulevard, Orlando, FL 32816, USA. Sudipta.Seal@ucf.edu.
authors: Tamil Selvan
authors: TS
authors: Sakthivel
authors: David L
authors: DL
authors: Reid
authors: Umananda M
authors: UM
authors: Bhatta
authors: Günter
authors: G
authors: Möbus
authors: Dean C
authors: DC
authors: Sayle
authors: Sudipta
authors: S
authors: Seal