Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating
Abstract Solid-state control of the thermal conductivity of materials is of exceptional interest for novel devices such as thermal diodes and switches. Here, we demonstrate the ability to continuously tune the thermal conductivity of nanoscale films of La0.5Sr0.5CoO3-δ (LSCO) by a factor of over 5,...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-38312-z |
| _version_ | 1797832035858907136 |
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| author | Yingying Zhang William M. Postiglione Rui Xie Chi Zhang Hao Zhou Vipul Chaturvedi Kei Heltemes Hua Zhou Tianli Feng Chris Leighton Xiaojia Wang |
| author_facet | Yingying Zhang William M. Postiglione Rui Xie Chi Zhang Hao Zhou Vipul Chaturvedi Kei Heltemes Hua Zhou Tianli Feng Chris Leighton Xiaojia Wang |
| author_sort | Yingying Zhang |
| collection | DOAJ |
| description | Abstract Solid-state control of the thermal conductivity of materials is of exceptional interest for novel devices such as thermal diodes and switches. Here, we demonstrate the ability to continuously tune the thermal conductivity of nanoscale films of La0.5Sr0.5CoO3-δ (LSCO) by a factor of over 5, via a room-temperature electrolyte-gate-induced non-volatile topotactic phase transformation from perovskite (with δ ≈ 0.1) to an oxygen-vacancy-ordered brownmillerite phase (with δ = 0.5), accompanied by a metal-insulator transition. Combining time-domain thermoreflectance and electronic transport measurements, model analyses based on molecular dynamics and Boltzmann transport equation, and structural characterization by X-ray diffraction, we uncover and deconvolve the effects of these transitions on heat carriers, including electrons and lattice vibrations. The wide-range continuous tunability of LSCO thermal conductivity enabled by low-voltage (below 4 V) room-temperature electrolyte gating opens the door to non-volatile dynamic control of thermal transport in perovskite-based functional materials, for thermal regulation and management in device applications. |
| first_indexed | 2024-04-09T14:01:16Z |
| format | Article |
| id | doaj.art-9989bda3d5924975900c8bac979cc9e5 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-09T14:01:16Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-9989bda3d5924975900c8bac979cc9e52023-05-07T11:17:24ZengNature PortfolioNature Communications2041-17232023-05-011411910.1038/s41467-023-38312-zWide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gatingYingying Zhang0William M. Postiglione1Rui Xie2Chi Zhang3Hao Zhou4Vipul Chaturvedi5Kei Heltemes6Hua Zhou7Tianli Feng8Chris Leighton9Xiaojia Wang10Department of Mechanical Engineering, University of MinnesotaDepartment of Chemical Engineering and Materials Science, University of MinnesotaDepartment of Mechanical Engineering, University of UtahDepartment of Mechanical Engineering, University of MinnesotaDepartment of Mechanical Engineering, University of UtahDepartment of Chemical Engineering and Materials Science, University of MinnesotaDepartment of Chemical Engineering and Materials Science, University of MinnesotaAdvanced Photon Source, Argonne National LaboratoryDepartment of Mechanical Engineering, University of UtahDepartment of Chemical Engineering and Materials Science, University of MinnesotaDepartment of Mechanical Engineering, University of MinnesotaAbstract Solid-state control of the thermal conductivity of materials is of exceptional interest for novel devices such as thermal diodes and switches. Here, we demonstrate the ability to continuously tune the thermal conductivity of nanoscale films of La0.5Sr0.5CoO3-δ (LSCO) by a factor of over 5, via a room-temperature electrolyte-gate-induced non-volatile topotactic phase transformation from perovskite (with δ ≈ 0.1) to an oxygen-vacancy-ordered brownmillerite phase (with δ = 0.5), accompanied by a metal-insulator transition. Combining time-domain thermoreflectance and electronic transport measurements, model analyses based on molecular dynamics and Boltzmann transport equation, and structural characterization by X-ray diffraction, we uncover and deconvolve the effects of these transitions on heat carriers, including electrons and lattice vibrations. The wide-range continuous tunability of LSCO thermal conductivity enabled by low-voltage (below 4 V) room-temperature electrolyte gating opens the door to non-volatile dynamic control of thermal transport in perovskite-based functional materials, for thermal regulation and management in device applications.https://doi.org/10.1038/s41467-023-38312-z |
| spellingShingle | Yingying Zhang William M. Postiglione Rui Xie Chi Zhang Hao Zhou Vipul Chaturvedi Kei Heltemes Hua Zhou Tianli Feng Chris Leighton Xiaojia Wang Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating Nature Communications |
| title | Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating |
| title_full | Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating |
| title_fullStr | Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating |
| title_full_unstemmed | Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating |
| title_short | Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating |
| title_sort | wide range continuous tuning of the thermal conductivity of la0 5sr0 5coo3 δ films via room temperature ion gel gating |
| url | https://doi.org/10.1038/s41467-023-38312-z |
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