Effect of oxygen defects blocking barriers on gadolinium doped ceria (GDC) electro-chemo-mechanical properties

Ahsanul Kabir, Simone Santucci, Ngo Van Nong, Maxim Varenik, Igor Lubomirsky, Robin Nigon, Paul Muralt, Vincenzo Esposito

Research output: Contribution to journalArticle

Abstract

Some oxygen defective metal oxides, such as cerium and bismuth oxides, have recently shown exceptional electrostrictive properties that are even superior to the best performing lead-based electrostrictors, e.g. lead-magnesium-niobates (PMN). Compared to piezoelectric ceramics, electromechanical mechanisms of such materials do not depend on crystalline symmetry but on the concentration of oxygen vacancy (VO ⋅⋅) in the lattice. In this work, we investigate for the first time the role of oxygen defects configuration on the electro-chemo-mechanical properties. This is achieved by tuning the oxygen defects blocking barrier density in polycrystalline gadolinium doped ceria with known oxygen vacancy concentration, Ce0.9Gd0.1O2-δ, δ = 0.05. Nanometric starting powders of ca. ∼12 nm are sintered in different conditions, including field assisted spark plasma sintering (SPS), fast firing and conventional method at high temperatures. These approaches allow controlling grain size and Gd-dopant diffusion, i.e. via thermally driven solute drag mechanism. By correlating the electro-chemo-mechanical properties, we show that oxygen vacancy distribution in the materials plays a key role in ceria electrostriction, overcoming the expected contributions from grain size and dopant concentration.

Original languageEnglish
Pages (from-to)53-60
Number of pages8
JournalActa Materialia
Volume174
DOIs
Publication statusPublished - Aug 1 2019

Fingerprint

Gadolinium
Cerium compounds
Oxygen vacancies
Spark plasma sintering
Oxygen
Mechanical properties
Defects
Lead
Doping (additives)
Electrostriction
Oxides
Piezoelectric ceramics
Crystal symmetry
Cerium
Bismuth
Powders
Drag
Magnesium
Tuning
Metals

Keywords

  • Electrostriction
  • Gadolinium-doped ceria
  • Sintering
  • Vacancies

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Effect of oxygen defects blocking barriers on gadolinium doped ceria (GDC) electro-chemo-mechanical properties. / Kabir, Ahsanul; Santucci, Simone; Van Nong, Ngo; Varenik, Maxim; Lubomirsky, Igor; Nigon, Robin; Muralt, Paul; Esposito, Vincenzo.

In: Acta Materialia, Vol. 174, 01.08.2019, p. 53-60.

Research output: Contribution to journalArticle

Kabir, Ahsanul ; Santucci, Simone ; Van Nong, Ngo ; Varenik, Maxim ; Lubomirsky, Igor ; Nigon, Robin ; Muralt, Paul ; Esposito, Vincenzo. / Effect of oxygen defects blocking barriers on gadolinium doped ceria (GDC) electro-chemo-mechanical properties. In: Acta Materialia. 2019 ; Vol. 174. pp. 53-60.
@article{6a78ef37b8224e89a56d712f5a93dca8,
title = "Effect of oxygen defects blocking barriers on gadolinium doped ceria (GDC) electro-chemo-mechanical properties",
abstract = "Some oxygen defective metal oxides, such as cerium and bismuth oxides, have recently shown exceptional electrostrictive properties that are even superior to the best performing lead-based electrostrictors, e.g. lead-magnesium-niobates (PMN). Compared to piezoelectric ceramics, electromechanical mechanisms of such materials do not depend on crystalline symmetry but on the concentration of oxygen vacancy (VO ⋅⋅) in the lattice. In this work, we investigate for the first time the role of oxygen defects configuration on the electro-chemo-mechanical properties. This is achieved by tuning the oxygen defects blocking barrier density in polycrystalline gadolinium doped ceria with known oxygen vacancy concentration, Ce0.9Gd0.1O2-δ, δ = 0.05. Nanometric starting powders of ca. ∼12 nm are sintered in different conditions, including field assisted spark plasma sintering (SPS), fast firing and conventional method at high temperatures. These approaches allow controlling grain size and Gd-dopant diffusion, i.e. via thermally driven solute drag mechanism. By correlating the electro-chemo-mechanical properties, we show that oxygen vacancy distribution in the materials plays a key role in ceria electrostriction, overcoming the expected contributions from grain size and dopant concentration.",
keywords = "Electrostriction, Gadolinium-doped ceria, Sintering, Vacancies",
author = "Ahsanul Kabir and Simone Santucci and {Van Nong}, Ngo and Maxim Varenik and Igor Lubomirsky and Robin Nigon and Paul Muralt and Vincenzo Esposito",
year = "2019",
month = "8",
day = "1",
doi = "10.1016/j.actamat.2019.05.009",
language = "English",
volume = "174",
pages = "53--60",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Effect of oxygen defects blocking barriers on gadolinium doped ceria (GDC) electro-chemo-mechanical properties

AU - Kabir, Ahsanul

AU - Santucci, Simone

AU - Van Nong, Ngo

AU - Varenik, Maxim

AU - Lubomirsky, Igor

AU - Nigon, Robin

AU - Muralt, Paul

AU - Esposito, Vincenzo

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Some oxygen defective metal oxides, such as cerium and bismuth oxides, have recently shown exceptional electrostrictive properties that are even superior to the best performing lead-based electrostrictors, e.g. lead-magnesium-niobates (PMN). Compared to piezoelectric ceramics, electromechanical mechanisms of such materials do not depend on crystalline symmetry but on the concentration of oxygen vacancy (VO ⋅⋅) in the lattice. In this work, we investigate for the first time the role of oxygen defects configuration on the electro-chemo-mechanical properties. This is achieved by tuning the oxygen defects blocking barrier density in polycrystalline gadolinium doped ceria with known oxygen vacancy concentration, Ce0.9Gd0.1O2-δ, δ = 0.05. Nanometric starting powders of ca. ∼12 nm are sintered in different conditions, including field assisted spark plasma sintering (SPS), fast firing and conventional method at high temperatures. These approaches allow controlling grain size and Gd-dopant diffusion, i.e. via thermally driven solute drag mechanism. By correlating the electro-chemo-mechanical properties, we show that oxygen vacancy distribution in the materials plays a key role in ceria electrostriction, overcoming the expected contributions from grain size and dopant concentration.

AB - Some oxygen defective metal oxides, such as cerium and bismuth oxides, have recently shown exceptional electrostrictive properties that are even superior to the best performing lead-based electrostrictors, e.g. lead-magnesium-niobates (PMN). Compared to piezoelectric ceramics, electromechanical mechanisms of such materials do not depend on crystalline symmetry but on the concentration of oxygen vacancy (VO ⋅⋅) in the lattice. In this work, we investigate for the first time the role of oxygen defects configuration on the electro-chemo-mechanical properties. This is achieved by tuning the oxygen defects blocking barrier density in polycrystalline gadolinium doped ceria with known oxygen vacancy concentration, Ce0.9Gd0.1O2-δ, δ = 0.05. Nanometric starting powders of ca. ∼12 nm are sintered in different conditions, including field assisted spark plasma sintering (SPS), fast firing and conventional method at high temperatures. These approaches allow controlling grain size and Gd-dopant diffusion, i.e. via thermally driven solute drag mechanism. By correlating the electro-chemo-mechanical properties, we show that oxygen vacancy distribution in the materials plays a key role in ceria electrostriction, overcoming the expected contributions from grain size and dopant concentration.

KW - Electrostriction

KW - Gadolinium-doped ceria

KW - Sintering

KW - Vacancies

UR - http://www.scopus.com/inward/record.url?scp=85066254488&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066254488&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2019.05.009

DO - 10.1016/j.actamat.2019.05.009

M3 - Article

AN - SCOPUS:85066254488

VL - 174

SP - 53

EP - 60

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

ER -