TY - JOUR
T1 - Voltage-Controlled Bistable Thermal Conductivity in Suspended Ferroelectric Thin-Film Membranes
AU - Foley, Brian M.
AU - Wallace, Margeaux
AU - Gaskins, John T.
AU - Paisley, Elizabeth A.
AU - Johnson-Wilke, Raegan L.
AU - Kim, Jong Woo
AU - Ryan, Philip J.
AU - Trolier-Mckinstry, Susan
AU - Hopkins, Patrick E.
AU - Ihlefeld, Jon F.
N1 - Funding Information:
This work was supported, in part by the Laboratory Directed Research and Development program at Sandia National Laboratories. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525. This material is based on the work supported in part, by the Air Force Office of Scientific Research under the award number FA9550-15-1-0079. The National Science Foundation (DMR-1410907) is gratefully acknowledged for funding the work at Penn State. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under the contract no. DE-AC02-06CH11357. The authors wish to acknowledge B.B. McKenzie and J.S. Wheeler for electron microscopy assistance and S.S. Fields for X-ray diffraction assistance.
Funding Information:
This work was supported, in part, by the Laboratory Directed Research and Development program at Sandia National Laboratories. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525. This material is based on the work supported, in part, by the Air Force Office of Scientific Research under the award number FA9550-15-1-0079. The National Science Foundation (DMR-1410907) is gratefully acknowledged for funding the work at Penn State. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under the contract no. DE-AC02-06CH11357. The authors wish to acknowledge B.B. McKenzie and J.S. Wheeler for electron microscopy assistance and S.S. Fields for X-ray diffraction assistance.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Ferroelastic domain walls in ferroelectric materials possess two properties that are known to affect phonon transport: a change in crystallographic orientation and a lattice strain. Changing populations and spacing of nanoscale-spaced ferroelastic domain walls lead to the manipulation of phonon-scattering rates, enabling the control of thermal conduction at ambient temperatures. In the present work, lead zirconate titanate (PZT) thin-film membrane structures were fabricated to reduce mechanical clamping to the substrate and enable a subsequent increase in the ferroelastic domain wall mobility. Under application of an electric field, the thermal conductivity of PZT increases abruptly at ∼100 kV/cm by ∼13% owing to a reduction in the number of phonon-scattering domain walls in the thermal conduction path. The thermal conductivity modulation is rapid, repeatable, and discrete, resulting in a bistable state or a "digital" modulation scheme. The modulation of thermal conductivity due to changes in domain wall configuration is supported by polarization-field, mechanical stiffness, and in situ microdiffraction experiments. This work opens a path toward a new means to control phonons and phonon-mediated energy in a digital manner at room temperature using only an electric field.
AB - Ferroelastic domain walls in ferroelectric materials possess two properties that are known to affect phonon transport: a change in crystallographic orientation and a lattice strain. Changing populations and spacing of nanoscale-spaced ferroelastic domain walls lead to the manipulation of phonon-scattering rates, enabling the control of thermal conduction at ambient temperatures. In the present work, lead zirconate titanate (PZT) thin-film membrane structures were fabricated to reduce mechanical clamping to the substrate and enable a subsequent increase in the ferroelastic domain wall mobility. Under application of an electric field, the thermal conductivity of PZT increases abruptly at ∼100 kV/cm by ∼13% owing to a reduction in the number of phonon-scattering domain walls in the thermal conduction path. The thermal conductivity modulation is rapid, repeatable, and discrete, resulting in a bistable state or a "digital" modulation scheme. The modulation of thermal conductivity due to changes in domain wall configuration is supported by polarization-field, mechanical stiffness, and in situ microdiffraction experiments. This work opens a path toward a new means to control phonons and phonon-mediated energy in a digital manner at room temperature using only an electric field.
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U2 - 10.1021/acsami.8b04169
DO - 10.1021/acsami.8b04169
M3 - Article
C2 - 29978704
AN - SCOPUS:85049691050
SN - 1944-8244
VL - 10
SP - 25493
EP - 25501
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 30
ER -