Giant elastic tunability in strained BiFeO 3 near an electrically induced phase transition

Q. Li, Y. Cao, P. Yu, R. K. Vasudevan, N. Laanait, A. Tselev, F. Xue, L. Q. Chen, P. Maksymovych, S. V. Kalinin, N. Balke

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Elastic anomalies are signatures of phase transitions in condensed matters and have traditionally been studied using various techniques spanning from neutron scattering to static mechanical testing. Here, using band-excitation elastic/piezoresponse spectroscopy, we probed sub-MHz elastic dynamics of a tip bias-induced rhombohedralâ 'tetragonal phase transition of strained (001)-BiFeO 3 (rhombohedral) ferroelectric thin films from â 1/410 3 nm 3 sample volumes. Near this transition, we observed that the Youngâ ™ s modulus intrinsically softens by over 30% coinciding with two-to three-fold enhancement of local piezoresponse. Coupled with phase-field modelling, we also addressed the influence of polarization switching and mesoscopic structural heterogeneities (for example, domain walls) on the kinetics of this phase transition, thereby providing fresh insights into the morphotropic phase boundary in ferroelectrics. Furthermore, the giant electrically tunable elastic stiffness and corresponding electromechanical properties observed here suggest potential applications of BiFeO3 in next-generation frequency-agile electroacoustic devices, based on the utilization of the soft modes underlying successive ferroelectric phase transitions.

Original languageEnglish (US)
Article number8985
JournalNature communications
Volume6
DOIs
StatePublished - Nov 24 2015

Fingerprint

Phase Transition
Phase transitions
Ferroelectric materials
Ferroelectric thin films
Mechanical testing
Elastic Modulus
Domain walls
Neutrons
Phase boundaries
electroacoustics
Neutron scattering
Spectrum Analysis
Elastic moduli
Stiffness
Spectroscopy
domain wall
Polarization
stiffness
modulus of elasticity
neutron scattering

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Li, Q., Cao, Y., Yu, P., Vasudevan, R. K., Laanait, N., Tselev, A., ... Balke, N. (2015). Giant elastic tunability in strained BiFeO 3 near an electrically induced phase transition. Nature communications, 6, [8985]. https://doi.org/10.1038/ncomms9985
Li, Q. ; Cao, Y. ; Yu, P. ; Vasudevan, R. K. ; Laanait, N. ; Tselev, A. ; Xue, F. ; Chen, L. Q. ; Maksymovych, P. ; Kalinin, S. V. ; Balke, N. / Giant elastic tunability in strained BiFeO 3 near an electrically induced phase transition. In: Nature communications. 2015 ; Vol. 6.
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Li, Q, Cao, Y, Yu, P, Vasudevan, RK, Laanait, N, Tselev, A, Xue, F, Chen, LQ, Maksymovych, P, Kalinin, SV & Balke, N 2015, 'Giant elastic tunability in strained BiFeO 3 near an electrically induced phase transition', Nature communications, vol. 6, 8985. https://doi.org/10.1038/ncomms9985

Giant elastic tunability in strained BiFeO 3 near an electrically induced phase transition. / Li, Q.; Cao, Y.; Yu, P.; Vasudevan, R. K.; Laanait, N.; Tselev, A.; Xue, F.; Chen, L. Q.; Maksymovych, P.; Kalinin, S. V.; Balke, N.

In: Nature communications, Vol. 6, 8985, 24.11.2015.

Research output: Contribution to journalArticle

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AU - Cao, Y.

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AU - Tselev, A.

AU - Xue, F.

AU - Chen, L. Q.

AU - Maksymovych, P.

AU - Kalinin, S. V.

AU - Balke, N.

PY - 2015/11/24

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