Tuning perovskite oxides by strain: Electronic structure, properties, and functions in (electro)catalysis and ferroelectricity

Hwang, Jonathan; Feng, Zhenxing; Charles, Nenian; Wang, Xiao Renshaw; Lee, Dongkyu; Stoerzinger, Kelsey A.; Muy, Sokseiha; Rao, Reshma R.; Lee, Dong‐Wook; Jacobs, Ryan; Morgan, Dane; Shao‐Horn, Yang

doi:10.1016/j.mattod.2019.03.014

Cited by 220 publications

(169 citation statements)

References 281 publications

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“…A higher d-band center closer to the Fermi level reduces occupation of the adsorbate-surface anti-bonding molecular orbital producing a stronger chemical bond between the adsorbate and the surface; similarly, a lower d-band center further from the Fermi level increases occupation of the anti-bonding state and weakens the surface bond (136) . As such, physical changes implemented by stress at the surface manifest as electronic control of adsorption and surface chemistry (137) .…”

Section: Stimulating Methods For Dynamic Catalysismentioning

confidence: 99%

The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

et al. 2020

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Transformational catalytic performance in rate and selectivity is obtainable through catalysts that change on the time scale of catalytic turnover frequency. In this work, dynamic catalysts are defined in the context and history of forced and passive dynamic chemical systems, with classification of unique catalyst behaviors based on temporally-relevant linear scaling parameters. The conditions leading to catalytic rate and selectivity enhancement are described as modifying the local electronic or steric environment of the active site to independently accelerate sequential elementary steps of an overall catalytic cycle. These concepts are related to physical systems and devices that stimulate a catalyst using light, vibrations, strain, and electronic manipulations including electrocatalysis, back-gating of catalyst surfaces, and introduction of surface electric fields via solid electrolytes and ferroelectrics. These catalytic stimuli are then compared for capability to improve catalysis across some of the most important chemical challenges for energy, materials, and sustainability. File list (2) download file view on ChemRxiv Perspective_Manuscript_ChemRxiv.pdf (3.88 MiB) download file view on ChemRxiv Perspective_Supporting_Information_ChemRxiv.pdf (149.75 KiB)

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Section: Stimulating Methods For Dynamic Catalysismentioning

confidence: 99%

The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

et al. 2020

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“…Strain engineering is a critical component of thin film growth of functional oxide materials, frequently being used to stabilise ferroelectric polarisation or tune functional properties [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Structural and photoelectric properties of tensile strainedBiFeO3

Peters

Iqbal

Alexe

et al. 2020

Phys. Rev. Materials

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“…One may therefore strain-tune epitaxial films of these materials according to the choice of single-crystal oxide substrate, e.g. in order to induce structural phase transitions 3 , modify charge conduction mechanisms 4,5 , enhance ferroic order 6,7 and control chemical reactivity 8,9 . Alternatively, an epitaxial film of any such material can be electrically strained both continuously and discontinuously by a ferroelectric substrate 10 .…”

mentioning

confidence: 99%

Large magnetoelectric coupling in multiferroic oxide heterostructures assembled via epitaxial lift-off

et al. 2020

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Epitaxial films may be released from growth substrates and transferred to structurally and chemically incompatible substrates, but epitaxial films of transition metal perovskite oxides have not been transferred to electroactive substrates for voltage control of their myriad functional properties. Here we demonstrate good strain transmission at the incoherent interface between a strain-released film of epitaxially grown ferromagnetic La 0.7 Sr 0.3 MnO 3 and an electroactive substrate of ferroelectric 0.68Pb(Mg 1/3 Nb 2/3)O 3-0.32PbTiO 3 in a different crystallographic orientation. Our strain-mediated magnetoelectric coupling compares well with respect to epitaxial heterostructures, where the epitaxy responsible for strong coupling can degrade film magnetization via strain and dislocations. Moreover, the electrical switching of magnetic anisotropy is repeatable and non-volatile. High-resolution magnetic vector maps reveal that micromagnetic behaviour is governed by electrically controlled strain and cracks in the film. Our demonstration should inspire others to control the physical/ chemical properties in strain-released epitaxial oxide films by using electroactive substrates to impart strain via non-epitaxial interfaces.

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Tuning perovskite oxides by strain: Electronic structure, properties, and functions in (electro)catalysis and ferroelectricity

Cited by 220 publications

References 281 publications

The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

Structural and photoelectric properties of tensile strainedBiFeO3

Large magnetoelectric coupling in multiferroic oxide heterostructures assembled via epitaxial lift-off

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