Nonlinear phenomena in multiferroic nanocapacitors: joule heating and electromechanical effects

Yunseok Kim; Amit Kumar; Alexander Tselev; Ivan I Kravchenko; Hee Han; Ionela Vrejoiu; Woo Lee; Dietrich Hesse; Marin Alexe; Sergei V Kalinin; Stephen Jesse

doi:10.1021/nn203342v

Nonlinear phenomena in multiferroic nanocapacitors: joule heating and electromechanical effects

Yunseok Kim, Amit Kumar, Alexander Tselev, Ivan I Kravchenko, Hee Han, Ionela Vrejoiu, Woo Lee, Dietrich Hesse, Marin Alexe, Sergei V Kalinin, Stephen Jesse

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

72 Citations (Scopus)

Abstract

We demonstrate an approach for probing nonlinear electromechanical responses in BiFeO(3) thin film nanocapacitors using half-harmonic band excitation piezoresponse force microscopy (PFM). Nonlinear PFM images of nanocapacitor arrays show clearly visible clusters of capacitors associated with variations of local leakage current through the BiFeO(3) film. Strain spectroscopy measurements and finite element modeling point to significance of the Joule heating and show that the thermal effects caused by the Joule heating can provide nontrivial contributions to the nonlinear electromechanical responses in ferroic nanostructures. This approach can be further extended to unambiguous mapping of electrostatic signal contributions to PFM and related techniques.

Original language	English
Pages (from-to)	9104-12
Number of pages	9
Journal	ACS Nano
Volume	5
Issue number	11
DOIs	https://doi.org/10.1021/nn203342v
Publication status	Published - 2011

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title = "Nonlinear phenomena in multiferroic nanocapacitors: joule heating and electromechanical effects",

abstract = "We demonstrate an approach for probing nonlinear electromechanical responses in BiFeO(3) thin film nanocapacitors using half-harmonic band excitation piezoresponse force microscopy (PFM). Nonlinear PFM images of nanocapacitor arrays show clearly visible clusters of capacitors associated with variations of local leakage current through the BiFeO(3) film. Strain spectroscopy measurements and finite element modeling point to significance of the Joule heating and show that the thermal effects caused by the Joule heating can provide nontrivial contributions to the nonlinear electromechanical responses in ferroic nanostructures. This approach can be further extended to unambiguous mapping of electrostatic signal contributions to PFM and related techniques.",

author = "Yunseok Kim and Amit Kumar and Alexander Tselev and Kravchenko, {Ivan I} and Hee Han and Ionela Vrejoiu and Woo Lee and Dietrich Hesse and Marin Alexe and Kalinin, {Sergei V} and Stephen Jesse",

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T1 - Nonlinear phenomena in multiferroic nanocapacitors

T2 - joule heating and electromechanical effects

AU - Kim, Yunseok

AU - Kumar, Amit

AU - Tselev, Alexander

AU - Kravchenko, Ivan I

AU - Han, Hee

AU - Vrejoiu, Ionela

AU - Lee, Woo

AU - Hesse, Dietrich

AU - Alexe, Marin

AU - Kalinin, Sergei V

AU - Jesse, Stephen

PY - 2011

Y1 - 2011

N2 - We demonstrate an approach for probing nonlinear electromechanical responses in BiFeO(3) thin film nanocapacitors using half-harmonic band excitation piezoresponse force microscopy (PFM). Nonlinear PFM images of nanocapacitor arrays show clearly visible clusters of capacitors associated with variations of local leakage current through the BiFeO(3) film. Strain spectroscopy measurements and finite element modeling point to significance of the Joule heating and show that the thermal effects caused by the Joule heating can provide nontrivial contributions to the nonlinear electromechanical responses in ferroic nanostructures. This approach can be further extended to unambiguous mapping of electrostatic signal contributions to PFM and related techniques.

AB - We demonstrate an approach for probing nonlinear electromechanical responses in BiFeO(3) thin film nanocapacitors using half-harmonic band excitation piezoresponse force microscopy (PFM). Nonlinear PFM images of nanocapacitor arrays show clearly visible clusters of capacitors associated with variations of local leakage current through the BiFeO(3) film. Strain spectroscopy measurements and finite element modeling point to significance of the Joule heating and show that the thermal effects caused by the Joule heating can provide nontrivial contributions to the nonlinear electromechanical responses in ferroic nanostructures. This approach can be further extended to unambiguous mapping of electrostatic signal contributions to PFM and related techniques.

U2 - 10.1021/nn203342v

DO - 10.1021/nn203342v

M3 - Article

C2 - 21955139

SN - 1936-086X

VL - 5

SP - 9104

EP - 9112

JO - ACS Nano

JF - ACS Nano

IS - 11

ER -

Nonlinear phenomena in multiferroic nanocapacitors: joule heating and electromechanical effects

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