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

Journal Article · · Physical Review Applied
 [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)

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.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0001299
OSTI ID:
1505620
Journal Information:
Physical Review Applied, Vol. 8, Issue 5; ISSN 2331-7019
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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  • Kumar, Sandeep; Garcia, Davil; Jin, Jiezhu
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 33, Issue 2 https://doi.org/10.1116/1.4906834
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Cited By (4)

Self-assembled multiferroic perovskite–spinel nanocomposite thin films: epitaxial growth, templating and integration on silicon journal January 2019
Thermal conductivity in self-assembled CoFe 2 O 4 /BiFeO 3 vertical nanocomposite films journal November 2018
Role of finite-size effect in BiFeO 3 nanoparticles to enhance ferromagnetism and microwave absorption journal January 2020
Oxygen‐vacancy‐controlled magnetic properties with magnetic pole inversion in BiFeO 3 ‐based multiferroics journal September 2019

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