Phonon Bridge Effect in Superlattices of Thermoelectric TiNiSn/HfNiSn With Controlled Interface Intermixing
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Sven Heinz
- Emigdio Chavez Angel
- Maximilian Trapp
- Hans-Joachim Kleebe
- Gerhard Jakob
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000553876700001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.3390/nano10061239
- eISSN
- 2079-4991
- Externe Identifier
- Clarivate Analytics Document Solution ID: MR8YR
- PubMed Identifier: 32630581
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- NANOMATERIALS
- Schlüsselwörter
- interface
- thermal conductivity
- superlattice
- intermixing
- coherent phonon
- roughness
- 3 omega
- 3 omega method
- magnetron sputtering
- half-Heusler
- thermoelectric
- thin film
- TiNiSn
- HfNiSn
- thermal boundary resistance
- Artikelnummer
- ARTN 1239
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Titel
- Phonon Bridge Effect in Superlattices of Thermoelectric TiNiSn/HfNiSn With Controlled Interface Intermixing
- Sub types
- Article
- Ausgabe der Zeitschrift
- 10
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Abstract
- <jats:p>The implementation of thermal barriers in thermoelectric materials improves their power conversion rates effectively. For this purpose, material boundaries are utilized and manipulated to affect phonon transmissivity. Specifically, interface intermixing and topography represents a useful but complex parameter for thermal transport modification. This study investigates epitaxial thin film multilayers, so called superlattices (SL), of TiNiSn/HfNiSn, both with pristine and purposefully deteriorated interfaces. High-resolution transmission electron microscopy and X-ray diffractometry are used to characterize their structural properties in detail. A differential 3 ω -method probes their thermal resistivity. The thermal resistivity reaches a maximum for an intermediate interface quality and decreases again for higher boundary layer intermixing. For boundaries with the lowest interface quality, the interface thermal resistance is reduced by 23% compared to a pristine SL. While an uptake of diffuse scattering likely explains the initial deterioration of thermal transport, we propose a phonon bridge interpretation for the lowered thermal resistivity of the interfaces beyond a critical intermixing. In this picture, the locally reduced acoustic contrast of the less defined boundary acts as a mediator that promotes phonon transition.</jats:p>
- Autoren
- Sven Heinz
- Emigdio Chavez Angel
- Maximilian Trapp
- Hans-Joachim Kleebe
- Gerhard Jakob
- DOI
- 10.3390/nano10061239
- eISSN
- 2079-4991
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- Nanomaterials
- Sprache
- en
- Online publication date
- 2020
- Paginierung
- 1239 - 1239
- Status
- Published online
- Herausgeber
- MDPI AG
- Herausgeber URL
- http://dx.doi.org/10.3390/nano10061239
- Datum der Datenerfassung
- 2020
- Titel
- Phonon Bridge Effect in Superlattices of Thermoelectric TiNiSn/HfNiSn With Controlled Interface Intermixing
- Ausgabe der Zeitschrift
- 10
Datenquelle: Crossref
- Abstract
- The implementation of thermal barriers in thermoelectric materials improves their power conversion rates effectively. For this purpose, material boundaries are utilized and manipulated to affect phonon transmissivity. Specifically, interface intermixing and topography represents a useful but complex parameter for thermal transport modification. This study investigates epitaxial thin film multilayers, so called superlattices (SL), of TiNiSn/HfNiSn, both with pristine and purposefully deteriorated interfaces. High-resolution transmission electron microscopy and X-ray diffractometry are used to characterize their structural properties in detail. A differential 3 ω -method probes their thermal resistivity. The thermal resistivity reaches a maximum for an intermediate interface quality and decreases again for higher boundary layer intermixing. For boundaries with the lowest interface quality, the interface thermal resistance is reduced by 23% compared to a pristine SL. While an uptake of diffuse scattering likely explains the initial deterioration of thermal transport, we propose a phonon bridge interpretation for the lowered thermal resistivity of the interfaces beyond a critical intermixing. In this picture, the locally reduced acoustic contrast of the less defined boundary acts as a mediator that promotes phonon transition.
- Addresses
- Institute of Physics, Johannes Gutenberg University, Staudingerweg 7, 55128 Mainz, Germany.
- Autoren
- Sven Heinz
- Emigdio Chavez Angel
- Maximilian Trapp
- Hans-Joachim Kleebe
- Gerhard Jakob
- DOI
- 10.3390/nano10061239
- eISSN
- 2079-4991
- Externe Identifier
- PubMed Identifier: 32630581
- PubMed Central ID: PMC7353130
- Funding acknowledgements
- Graduate School of Excellence Materials Science In Mainz: GSC266
- Ministerio de Economía, Industria y Competitividad, Gobierno de España: SEV-2017-0706
- Deutsche Forschungsgemeinschaft: 121583221
- Open access
- true
- ISSN
- 2079-4991
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- Nanomaterials (Basel, Switzerland)
- Sprache
- eng
- Medium
- Electronic
- Online publication date
- 2020
- Open access status
- Open Access
- Paginierung
- E1239
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Publisher licence
- CC BY
- Datum der Datenerfassung
- 2020
- Titel
- Phonon Bridge Effect in Superlattices of Thermoelectric TiNiSn/HfNiSn With Controlled Interface Intermixing.
- Sub types
- research-article
- Journal Article
- Ausgabe der Zeitschrift
- 10
Files
https://www.mdpi.com/2079-4991/10/6/1239/pdf?version=1593453081 https://europepmc.org/articles/PMC7353130?pdf=render
Datenquelle: Europe PubMed Central
- Abstract
- The implementation of thermal barriers in thermoelectric materials improves their power conversion rates effectively. For this purpose, material boundaries are utilized and manipulated to affect phonon transmissivity. Specifically, interface intermixing and topography represents a useful but complex parameter for thermal transport modification. This study investigates epitaxial thin film multilayers, so called superlattices (SL), of TiNiSn/HfNiSn, both with pristine and purposefully deteriorated interfaces. High-resolution transmission electron microscopy and X-ray diffractometry are used to characterize their structural properties in detail. A differential 3 ω -method probes their thermal resistivity. The thermal resistivity reaches a maximum for an intermediate interface quality and decreases again for higher boundary layer intermixing. For boundaries with the lowest interface quality, the interface thermal resistance is reduced by 23% compared to a pristine SL. While an uptake of diffuse scattering likely explains the initial deterioration of thermal transport, we propose a phonon bridge interpretation for the lowered thermal resistivity of the interfaces beyond a critical intermixing. In this picture, the locally reduced acoustic contrast of the less defined boundary acts as a mediator that promotes phonon transition.
- Date of acceptance
- 2020
- Autoren
- Sven Heinz
- Emigdio Chavez Angel
- Maximilian Trapp
- Hans-Joachim Kleebe
- Gerhard Jakob
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/32630581
- DOI
- 10.3390/nano10061239
- Externe Identifier
- PubMed Central ID: PMC7353130
- Funding acknowledgements
- Deutsche Forschungsgemeinschaft: 121583221
- Graduate School of Excellence Materials Science In Mainz: GSC266
- Ministerio de Economía, Industria y Competitividad, Gobierno de España: SEV-2017-0706
- ISSN
- 2079-4991
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- Nanomaterials (Basel)
- Schlüsselwörter
- 3 omega
- 3 omega method
- HfNiSn
- TiNiSn
- coherent phonon
- half-Heusler
- interface
- intermixing
- magnetron sputtering
- roughness
- superlattice
- thermal boundary resistance
- thermal conductivity
- thermoelectric
- thin film
- Sprache
- eng
- Country
- Switzerland
- PII
- nano10061239
- Datum der Veröffentlichung
- 2020
- Status
- Published online
- Titel
- Phonon Bridge Effect in Superlattices of Thermoelectric TiNiSn/HfNiSn With Controlled Interface Intermixing.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 10
Datenquelle: PubMed
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