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Title: Thermal conductivity in self-assembled CoFe 2O 4/BiFeO 3 vertical nanocomposite films

The thermal conductivity of self-assembled nanocomposite oxide films consisting of cobalt ferrite (CFO) spinel pillars grown within a single-crystal bismuth ferrite (BFO) perovskite matrix is described as a function of the volume fraction of the spinel. Single phase BFO and CFO had cross-plane thermal conductivities of 1.32 W m –1 K –1 and 3.94 W m –1 K –1, respectively, and the thermal conductivity of the nanocomposites increased with the CFO volume fraction within this range. A small increase (~5%) in thermal conductivity for the pure CFO phase in the AC-demagnetized state was observed, suggesting possible magnon contributions. As a result, steady state gray-medium based variance-reduced Monte Carlo simulations show consistent trends with experimental data on the dependence of thermal conductivity with the CFO volume fraction.
Authors:
ORCiD logo [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ; ORCiD logo [3] ;  [2] ;  [2] ;  [2] ;  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Shandong Univ., Qingdao (China)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 113; Journal Issue: 22; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1504764

Zhang, Chen, Huberman, Samuel C., Ning, Shuai, Pelliciari, Jonathan, Duncan, Ryan A., Liao, Bolin, Ojha, Shuchi, Freeland, John W., Nelson, Keith A., Comin, Riccardo, Chen, Gang, and Ross, Caroline A.. Thermal conductivity in self-assembled CoFe2O4/BiFeO3 vertical nanocomposite films. United States: N. p., Web. doi:10.1063/1.5049176.
Zhang, Chen, Huberman, Samuel C., Ning, Shuai, Pelliciari, Jonathan, Duncan, Ryan A., Liao, Bolin, Ojha, Shuchi, Freeland, John W., Nelson, Keith A., Comin, Riccardo, Chen, Gang, & Ross, Caroline A.. Thermal conductivity in self-assembled CoFe2O4/BiFeO3 vertical nanocomposite films. United States. doi:10.1063/1.5049176.
Zhang, Chen, Huberman, Samuel C., Ning, Shuai, Pelliciari, Jonathan, Duncan, Ryan A., Liao, Bolin, Ojha, Shuchi, Freeland, John W., Nelson, Keith A., Comin, Riccardo, Chen, Gang, and Ross, Caroline A.. 2018. "Thermal conductivity in self-assembled CoFe2O4/BiFeO3 vertical nanocomposite films". United States. doi:10.1063/1.5049176.
@article{osti_1504764,
title = {Thermal conductivity in self-assembled CoFe2O4/BiFeO3 vertical nanocomposite films},
author = {Zhang, Chen and Huberman, Samuel C. and Ning, Shuai and Pelliciari, Jonathan and Duncan, Ryan A. and Liao, Bolin and Ojha, Shuchi and Freeland, John W. and Nelson, Keith A. and Comin, Riccardo and Chen, Gang and Ross, Caroline A.},
abstractNote = {The thermal conductivity of self-assembled nanocomposite oxide films consisting of cobalt ferrite (CFO) spinel pillars grown within a single-crystal bismuth ferrite (BFO) perovskite matrix is described as a function of the volume fraction of the spinel. Single phase BFO and CFO had cross-plane thermal conductivities of 1.32 W m–1 K–1 and 3.94 W m–1 K–1, respectively, and the thermal conductivity of the nanocomposites increased with the CFO volume fraction within this range. A small increase (~5%) in thermal conductivity for the pure CFO phase in the AC-demagnetized state was observed, suggesting possible magnon contributions. As a result, steady state gray-medium based variance-reduced Monte Carlo simulations show consistent trends with experimental data on the dependence of thermal conductivity with the CFO volume fraction.},
doi = {10.1063/1.5049176},
journal = {Applied Physics Letters},
number = 22,
volume = 113,
place = {United States},
year = {2018},
month = {11}
}

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