Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure
The role of the ferroelectric polarization state and crystal structure in determining the room-temperature thermal conductivity of epitaxial BiFeO₃ thin films is investigated. The ferroelectric domain configuration is varied by changing the oxygen partial pressure during growth, as well as by polari...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2018
|
| Online Access: | http://hdl.handle.net/1721.1/114624 |
| _version_ | 1811072095566692352 |
|---|---|
| author | Ning, Shuai Huberman, Samuel C. Zhang, Chen Zhang, Zhengjun Chen, Gang Ross, Caroline A. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Ning, Shuai Huberman, Samuel C. Zhang, Chen Zhang, Zhengjun Chen, Gang Ross, Caroline A. |
| author_sort | Ning, Shuai |
| collection | MIT |
| description | The role of the ferroelectric polarization state and crystal structure in determining the room-temperature thermal conductivity of epitaxial BiFeO₃ thin films is investigated. The ferroelectric domain configuration is varied by changing the oxygen partial pressure during growth, as well as by polarizing the samples by the application of an in situ electric field during the thermal conductivity measurement. However, little or no dependence of thermal conductivity on the ferroelectric domain structure is observed. In contrast, the thermal conductivity significantly depends on the morphotropic phase structure, being about 2/3 as large in tetragonal-like compared to rhombohedral-like BiFeO₃ film. The substantial structural dependence of thermal conductivity found here may provide a route to reversible manipulation of thermal properties. |
| first_indexed | 2024-09-23T09:00:49Z |
| format | Article |
| id | mit-1721.1/114624 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:00:49Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1146242024-07-15T17:17:51Z Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure Ning, Shuai Huberman, Samuel C. Zhang, Chen Zhang, Zhengjun Chen, Gang Ross, Caroline A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering The role of the ferroelectric polarization state and crystal structure in determining the room-temperature thermal conductivity of epitaxial BiFeO₃ thin films is investigated. The ferroelectric domain configuration is varied by changing the oxygen partial pressure during growth, as well as by polarizing the samples by the application of an in situ electric field during the thermal conductivity measurement. However, little or no dependence of thermal conductivity on the ferroelectric domain structure is observed. In contrast, the thermal conductivity significantly depends on the morphotropic phase structure, being about 2/3 as large in tetragonal-like compared to rhombohedral-like BiFeO₃ film. The substantial structural dependence of thermal conductivity found here may provide a route to reversible manipulation of thermal properties. Solid-State Solar-Thermal Energy Conversion Center (Award DE-SC0001299) Solid-State Solar-Thermal Energy Conversion Center (Award DE-FG02-09ER46577) 2018-04-09T15:58:17Z 2018-04-09T15:58:17Z 2017-11 2017-06 2017-11-30T18:00:14Z Article http://purl.org/eprint/type/JournalArticle 2331-7019 http://hdl.handle.net/1721.1/114624 Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure, Physical Review Applied 8, 5 (November 2017): 054049 © 2017 American Physical Society en http://dx.doi.org/10.1103/PhysRevApplied.8.054049 Physical Review Applied Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Ning, Shuai Huberman, Samuel C. Zhang, Chen Zhang, Zhengjun Chen, Gang Ross, Caroline A. Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure |
| title | Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure |
| title_full | Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure |
| title_fullStr | Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure |
| title_full_unstemmed | Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure |
| title_short | Dependence of the Thermal Conductivity of BiFeO₃ Thin Films on Polarization and Structure |
| title_sort | dependence of the thermal conductivity of bifeo₃ thin films on polarization and structure |
| url | http://hdl.handle.net/1721.1/114624 |
| work_keys_str_mv | AT ningshuai dependenceofthethermalconductivityofbifeo3thinfilmsonpolarizationandstructure AT hubermansamuelc dependenceofthethermalconductivityofbifeo3thinfilmsonpolarizationandstructure AT zhangchen dependenceofthethermalconductivityofbifeo3thinfilmsonpolarizationandstructure AT zhangzhengjun dependenceofthethermalconductivityofbifeo3thinfilmsonpolarizationandstructure AT chengang dependenceofthethermalconductivityofbifeo3thinfilmsonpolarizationandstructure AT rosscarolinea dependenceofthethermalconductivityofbifeo3thinfilmsonpolarizationandstructure |