Electro-chemo-mechanical properties in nanostructured Ca-doped ceria (CDC) by field assisted sintering

Ahsanul Kabir*, Haiwu Zhang, Sofie Colding-Jørgensen, Simone Santucci, Sebastian Molin, Vincenzo Esposito

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Recent investigations have shown that highly oxygen defective cerium oxides generate non-classical electrostriction that is superior to lead-based ferroelectrics. In this work, we report the effect of field-assisted spark plasma sintering (SPS) on electro-chemo-mechanical properties of calcium doped ceria (CDC). Nanometric powders of Ca.10 nm are rapidly consolidated to form polycrystalline nanostructures with a high degree of crystalline disorder. Remarkably, the resultant material demonstrates a large electromechanical strain without a frequency-related relaxation effect. We conclude that electromechanical activity in CDC materials strictly depends on the Ca2+- interaction, while disorder at the crystalline boundaries has a minor effect.
Original languageEnglish
JournalScripta Materialia
Volume187
Pages (from-to)183-187
ISSN1359-6462
DOIs
Publication statusPublished - 2020

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