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Title: Dependence of the Thermal Conductivity of BiFeO 3 Thin Films on Polarization and Structure

Abstract

The role of the ferroelectric polarization state and crystal structure in determining the room-temperature thermal conductivity of epitaxial BiFeO 3 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 BiFeO 3 film. As a result, the substantial structural dependence of thermal conductivity found here may provide a route to reversible manipulation of thermal properties.

Authors:
 [1];  [2];  [2];  [3];  [2];  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Tsinghua Univ., Beijing (People's Republic of China)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Tsinghua Univ., Beijing (People's Republic of China)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1505620
Grant/Contract Number:  
SC0001299
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 8; Journal Issue: 5; Journal ID: ISSN 2331-7019
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ning, Shuai, Huberman, Samuel C., Zhang, Chen, Zhang, Zhengjun, Chen, Gang, and Ross, Caroline A. Dependence of the Thermal Conductivity of BiFeO3 Thin Films on Polarization and Structure. United States: N. p., 2017. Web. doi:10.1103/physrevapplied.8.054049.
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. United States. doi:10.1103/physrevapplied.8.054049.
Ning, Shuai, Huberman, Samuel C., Zhang, Chen, Zhang, Zhengjun, Chen, Gang, and Ross, Caroline A. Wed . "Dependence of the Thermal Conductivity of BiFeO3 Thin Films on Polarization and Structure". United States. doi:10.1103/physrevapplied.8.054049. https://www.osti.gov/servlets/purl/1505620.
@article{osti_1505620,
title = {Dependence of the Thermal Conductivity of BiFeO3 Thin Films on Polarization and Structure},
author = {Ning, Shuai and Huberman, Samuel C. and Zhang, Chen and Zhang, Zhengjun and Chen, Gang and Ross, Caroline A.},
abstractNote = {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. As a result, the substantial structural dependence of thermal conductivity found here may provide a route to reversible manipulation of thermal properties.},
doi = {10.1103/physrevapplied.8.054049},
journal = {Physical Review Applied},
number = 5,
volume = 8,
place = {United States},
year = {2017},
month = {11}
}

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Works referenced in this record:

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journal, November 2009

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