Enhanced mass diffusion phenomena in highly defective doped ceria

Vincenzo Esposito, De Wei Ni, Zeming He, Wei Zhang, Aditya Shanker Prasad, Julie Glasscock, Christodoulos Chatzichristodoulou, Severine Ramousse, Andreas Kaiser

Research output: Contribution to journalJournal articleResearchpeer-review


The densification and grain growth of the solid state ionic conductor material Ce0.9Gd0.1O1.95−δ (i.e. GDC10, gadolinium-doped ceria, with Gd 10mol.%) are analysed for nanometric and fine powders of various particle sizes, both in air and in a 9vol.% H2–N2 mixture. Due to a dominant solute drag effect in aliovalent highly doped ceria, the starting morphology of the powders controls the diffusion mechanisms of the material in air. Conversely, highly enhanced densification and grain growth are achieved by firing the materials at reduced temperatures (800
Original languageEnglish
JournalActa Materialia
Issue number16
Pages (from-to)6290-6300
Publication statusPublished - 2013


  • Gadolinium-doped ceria
  • Solute drag
  • Defects
  • Sintering
  • Grain growth


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