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Title: Tunable thermal conductivity via domain structure engineering in ferroelectric thin films: A phase-field simulation

Journal Article · · Acta Materialia
 [1];  [1];  [2];  [3];  [1]
  1. The Pennsylvania State Univ., University Park, PA (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Univ. of Virginia, Charlottesville, VA (United States)

Effective thermal conductivity as a function of domain structure is studied by solving the heat conduction equation using a spectral iterative perturbation algorithm in materials with inhomogeneous thermal conductivity distribution. Using this proposed algorithm, the experimentally measured effective thermal conductivities of domain-engineered {001}p-BiFeO3 thin films are quantitatively reproduced. In conjunction with two other testing examples, this proposed algorithm is proven to be an efficient tool for interpreting the relationship between the effective thermal conductivity and micro-/domain-structures. By combining this algorithm with the phase-field model of ferroelectric thin films, the effective thermal conductivity for PbZr1-xTixO3 films under different composition, thickness, strain, and working conditions is predicted. It is shown that the chemical composition, misfit strain, film thickness, film orientation, and a Piezoresponse Force Microscopy tip can be used to engineer the domain structures and tune the effective thermal conductivity. Furthermore, we expect our findings will stimulate future theoretical, experimental and engineering efforts on developing devices based on the tunable effective thermal conductivity in ferroelectric nanostructures.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; AC02-05CH11231
OSTI ID:
1332949
Alternate ID(s):
OSTI ID: 1357666
Report Number(s):
SAND-2016-11287J; PII: S1359645416302361
Journal Information:
Acta Materialia, Vol. 111, Issue C; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

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Cited By (8)

Progress in BiFeO 3 -based heterostructures: materials, properties and applications journal January 2020
A thermodynamic potential, energy storage performances, and electrocaloric effects of Ba 1- x Sr x TiO 3 single crystals journal March 2018
Ferroelectric domain structures and temperature-misfit strain phase diagrams of K 1-x Na x NbO 3 thin films: A phase-field study journal August 2019
Effect of stresses on the dielectric and piezoelectric properties of Pb(Zr 0.52 Ti 0.48 )O 3 thin films journal July 2019
Kinetic control of tunable multi-state switching in ferroelectric thin films journal March 2019
Phase-Field Model of Electrothermal Breakdown in Flexible High-Temperature Nanocomposites under Extreme Conditions journal April 2018
A thermodynamic potential and the temperature-composition phase diagram for single-crystalline K 1- x Na x NbO 3 (0 ≤  x  ≤ 0.5) journal March 2017
High-Throughput Phase-Field Design of High-Energy-Density Polymer Nanocomposites journal November 2017