Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO3Thin Film Deposited in a Composition-Spread Geometry

David Bugallo; Eric Langenberg; Elias Ferreiro-Vila; Eva H. Smith; Christina Stefani; Xavier Batlle; Gustau Catalan; Neus Domingo; Darrell G. Schlom; Francisco Rivadulla

doi:10.1021/acsami.1c08758

Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO₃Thin Film Deposited in a Composition-Spread Geometry

David Bugallo, Eric Langenberg, Elias Ferreiro-Vila, Eva H. Smith, Christina Stefani, Xavier Batlle, Gustau Catalan, Neus Domingo, Darrell G. Schlom, Francisco Rivadulla

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

7 Scopus citations

Abstract

We present a detailed analysis of the temperature dependence of the thermal conductivity of a ferroelectric PbTiO3 thin film deposited in a composition-spread geometry enabling a continuous range of compositions from ∼25% titanium deficient to ∼20% titanium rich to be studied. By fitting the experimental results to the Debye model we deconvolute and quantify the two main phonon-scattering sources in the system: ferroelectric domain walls (DWs) and point defects. Our results prove that ferroelectric DWs are the main agent limiting the thermal conductivity in this system, not only in the stoichiometric region of the thin film ([Pb]/[Ti] ≈ 1) but also when the concentration of the cation point defects is significant (up to ∼15%). Hence, DWs in ferroelectric materials are a source of phonon scattering at least as effective as point defects. Our results demonstrate the viability and effectiveness of using reconfigurable DWs to control the thermal conductivity in solid-state devices.

Original language	English
Pages (from-to)	45679-45685
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	13
Issue number	38
DOIs	https://doi.org/10.1021/acsami.1c08758
State	Published - Sep 29 2021
Externally published	Yes

Funding

This work received financial support from the Ministerio de Economía y Competitividad (Spain) under project nos. MAT2016-80762-R, PID2019-104150RB-100, and PGC2018-097789-B-I00, Xunta de Galicia (Centro Singular de Investigación de Galicia Accreditation 2019-2022, ED431G 2019/03), the European Union (European Regional Development Fund-ERDF), and the European Commission through the Horizon H2020 funding by H2020-MSCA-RISE-2016-Project No. 734187-SPICOLOST. E.L. is a Serra Húnter Fellow (Generalitat de Catalunya). E.L. acknowledges funding received from the European Union’s Horizon 2020 Research and Innovation Program through the Marie Skłodowska-Curie Actions: Individual Fellowship-Global Fellowship (ref. MSCA-IF-GF-708129). D.B. acknowledges financial support from MINECO (Spain) through an FPI fellowship (BES-2017-079688). The work at Cornell was supported by the Army Research Office under grant W911NF-16-1-0315. H.P. acknowledges support from the National Science Foundation [Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM)] under Cooperative Agreement No. DMR-1539918.

Funders	Funder number
Centro Singular de Investigación de Galicia Accreditation	ED431G 2019/03, 2019-2022
National Science Foundation	DMR-1539918
Army Research Office	W911NF-16-1-0315
Horizon 2020 Framework Programme	708129
H2020 Marie Skłodowska-Curie Actions	MSCA-IF-GF-708129
Family Process Institute	BES-2017-079688
European Commission
Ministerio de Economía y Competitividad	PGC2018-097789-B-I00, PID2019-104150RB-100, MAT2016-80762-R
Horizon 2020	734187
European Regional Development Fund
Xunta de Galicia

Keywords

composition-spread combinatorial study
domain walls
ferroelectrics
phonon-scattering mechanisms
thermal conductivity

Access to Document

10.1021/acsami.1c08758

Cite this

Bugallo, D., Langenberg, E., Ferreiro-Vila, E., Smith, E. H., Stefani, C., Batlle, X., Catalan, G., Domingo, N., Schlom, D. G., & Rivadulla, F. (2021). Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO₃Thin Film Deposited in a Composition-Spread Geometry. ACS Applied Materials and Interfaces, 13(38), 45679-45685. https://doi.org/10.1021/acsami.1c08758

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title = "Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO3Thin Film Deposited in a Composition-Spread Geometry",

abstract = "We present a detailed analysis of the temperature dependence of the thermal conductivity of a ferroelectric PbTiO3 thin film deposited in a composition-spread geometry enabling a continuous range of compositions from ∼25% titanium deficient to ∼20% titanium rich to be studied. By fitting the experimental results to the Debye model we deconvolute and quantify the two main phonon-scattering sources in the system: ferroelectric domain walls (DWs) and point defects. Our results prove that ferroelectric DWs are the main agent limiting the thermal conductivity in this system, not only in the stoichiometric region of the thin film ([Pb]/[Ti] ≈ 1) but also when the concentration of the cation point defects is significant (up to ∼15%). Hence, DWs in ferroelectric materials are a source of phonon scattering at least as effective as point defects. Our results demonstrate the viability and effectiveness of using reconfigurable DWs to control the thermal conductivity in solid-state devices.",

keywords = "composition-spread combinatorial study, domain walls, ferroelectrics, phonon-scattering mechanisms, thermal conductivity",

author = "David Bugallo and Eric Langenberg and Elias Ferreiro-Vila and Smith, {Eva H.} and Christina Stefani and Xavier Batlle and Gustau Catalan and Neus Domingo and Schlom, {Darrell G.} and Francisco Rivadulla",

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Bugallo, D, Langenberg, E, Ferreiro-Vila, E, Smith, EH, Stefani, C, Batlle, X, Catalan, G, Domingo, N, Schlom, DG & Rivadulla, F 2021, 'Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO₃Thin Film Deposited in a Composition-Spread Geometry', ACS Applied Materials and Interfaces, vol. 13, no. 38, pp. 45679-45685. https://doi.org/10.1021/acsami.1c08758

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AU - Langenberg, Eric

AU - Ferreiro-Vila, Elias

AU - Smith, Eva H.

AU - Stefani, Christina

AU - Batlle, Xavier

AU - Catalan, Gustau

AU - Domingo, Neus

AU - Schlom, Darrell G.

AU - Rivadulla, Francisco

PY - 2021/9/29

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