Enhanced Electromechanical Response in Sm and Nd Co-doped Ceria

Ahsanul Kabir; Jacob R. Bowen; Maxim Varenik; Igor Lubomirsky; Vincenzo Esposito

doi:10.1016/j.mtla.2020.100728

Enhanced Electromechanical Response in Sm and Nd Co-doped Ceria

Ahsanul Kabir, Jacob R. Bowen, Maxim Varenik, Igor Lubomirsky, Vincenzo Esposito

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Highly oxygen defective cerium oxide, e.g., Gd-doped ceria, is a sustainable non-classical electrostrictor with electromechanical properties that are superior to lead-based piezoelectric metal oxides. Here, we report electrostriction in co-doped ceria (Sm, Nd) with a nominally low short-range vacancy-dopant association energy. Such a strategy results in a higher electrostrictive strain coefficient (M₃₃), up to 10⁻¹⁷ (m/V)² at lower-frequencies, and unexpected electromechanical strain saturation and relaxation effects. These outcomes support the hypothesis that electrostriction is strongly influenced by the local environment of oxygen vacancy and by the ionic migration blocking factors built-in the microstructure.

Original language	English
Article number	100728
Journal	Materialia
Volume	12
DOIs	https://doi.org/10.1016/j.mtla.2020.100728
State	Published - 1 Aug 2020
Externally published	Yes

Keywords

blocking barriers
co-doped ceria
electrostriction
ionic conductivity
oxygen vacancies

ASJC Scopus subject areas

General Materials Science

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10.1016/j.mtla.2020.100728

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title = "Enhanced Electromechanical Response in Sm and Nd Co-doped Ceria",

abstract = "Highly oxygen defective cerium oxide, e.g., Gd-doped ceria, is a sustainable non-classical electrostrictor with electromechanical properties that are superior to lead-based piezoelectric metal oxides. Here, we report electrostriction in co-doped ceria (Sm, Nd) with a nominally low short-range vacancy-dopant association energy. Such a strategy results in a higher electrostrictive strain coefficient (M33), up to 10−17 (m/V)2 at lower-frequencies, and unexpected electromechanical strain saturation and relaxation effects. These outcomes support the hypothesis that electrostriction is strongly influenced by the local environment of oxygen vacancy and by the ionic migration blocking factors built-in the microstructure.",

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doi = "10.1016/j.mtla.2020.100728",

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T1 - Enhanced Electromechanical Response in Sm and Nd Co-doped Ceria

AU - Kabir, Ahsanul

AU - Bowen, Jacob R.

AU - Varenik, Maxim

AU - Lubomirsky, Igor

AU - Esposito, Vincenzo

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Highly oxygen defective cerium oxide, e.g., Gd-doped ceria, is a sustainable non-classical electrostrictor with electromechanical properties that are superior to lead-based piezoelectric metal oxides. Here, we report electrostriction in co-doped ceria (Sm, Nd) with a nominally low short-range vacancy-dopant association energy. Such a strategy results in a higher electrostrictive strain coefficient (M33), up to 10−17 (m/V)2 at lower-frequencies, and unexpected electromechanical strain saturation and relaxation effects. These outcomes support the hypothesis that electrostriction is strongly influenced by the local environment of oxygen vacancy and by the ionic migration blocking factors built-in the microstructure.

AB - Highly oxygen defective cerium oxide, e.g., Gd-doped ceria, is a sustainable non-classical electrostrictor with electromechanical properties that are superior to lead-based piezoelectric metal oxides. Here, we report electrostriction in co-doped ceria (Sm, Nd) with a nominally low short-range vacancy-dopant association energy. Such a strategy results in a higher electrostrictive strain coefficient (M33), up to 10−17 (m/V)2 at lower-frequencies, and unexpected electromechanical strain saturation and relaxation effects. These outcomes support the hypothesis that electrostriction is strongly influenced by the local environment of oxygen vacancy and by the ionic migration blocking factors built-in the microstructure.

KW - blocking barriers

KW - co-doped ceria

KW - electrostriction

KW - ionic conductivity

KW - oxygen vacancies

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DO - 10.1016/j.mtla.2020.100728

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Enhanced Electromechanical Response in Sm and Nd Co-doped Ceria

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Keywords

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