Observing the superparaelectric limit of relaxor (Na 1/2Bi 1/2) 0.9Ba 0.1TiO 3 nanocrystals

Ramchandra Tiruvalam; Animesh Kundu; Andrey Soukhojak; Stephen Jesse; Sergei V. Kalinin

doi:10.1063/1.2337880

Observing the superparaelectric limit of relaxor (Na _1/2Bi _1/2) _0.9Ba _0.1TiO ₃ nanocrystals

Ramchandra Tiruvalam, Animesh Kundu, Andrey Soukhojak, Stephen Jesse, Sergei V. Kalinin

Center for Nanophase Matls Sciences

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

8 Scopus citations

Abstract

Applications of ferroelectric materials for nonvolatile memory, data storage devices, nanosensors, and nanoactuators necessitate fundamental studies of ferroelectric behavior, including the presence of switchable polarization and switching behavior, on the nanoscale. Here the authors investigated the switching properties of (Na _1/2Bi _1/2) _0.9Ba _0.1TiO ₃ nanocrystals prepared by a mist deposition technique using piezoresponse force microscopy (PFM) and spectroscopy. By using stiff cantilevers, reliable PFM data have been obtained and local electromechanical response was measured. The transition from ferroelectric to superparaelectric behavior in these nanocrystals was observed at sizes of ∼10 nm. The effects of particle shape on the PFM imaging are also discussed.

Original language	English
Article number	112901
Journal	Applied Physics Letters
Volume	89
Issue number	11
DOIs	https://doi.org/10.1063/1.2337880
State	Published - 2006

Funding

One of the authors (R.T.) acknowledges the partial support by the SURA program of the Oak Ridge National Laboratory, managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory
UT-Battelle

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abstract = "Applications of ferroelectric materials for nonvolatile memory, data storage devices, nanosensors, and nanoactuators necessitate fundamental studies of ferroelectric behavior, including the presence of switchable polarization and switching behavior, on the nanoscale. Here the authors investigated the switching properties of (Na 1/2Bi 1/2) 0.9Ba 0.1TiO 3 nanocrystals prepared by a mist deposition technique using piezoresponse force microscopy (PFM) and spectroscopy. By using stiff cantilevers, reliable PFM data have been obtained and local electromechanical response was measured. The transition from ferroelectric to superparaelectric behavior in these nanocrystals was observed at sizes of ∼10 nm. The effects of particle shape on the PFM imaging are also discussed.",

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AU - Jesse, Stephen

AU - Kalinin, Sergei V.

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AB - Applications of ferroelectric materials for nonvolatile memory, data storage devices, nanosensors, and nanoactuators necessitate fundamental studies of ferroelectric behavior, including the presence of switchable polarization and switching behavior, on the nanoscale. Here the authors investigated the switching properties of (Na 1/2Bi 1/2) 0.9Ba 0.1TiO 3 nanocrystals prepared by a mist deposition technique using piezoresponse force microscopy (PFM) and spectroscopy. By using stiff cantilevers, reliable PFM data have been obtained and local electromechanical response was measured. The transition from ferroelectric to superparaelectric behavior in these nanocrystals was observed at sizes of ∼10 nm. The effects of particle shape on the PFM imaging are also discussed.

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Observing the superparaelectric limit of relaxor (Na _1/2Bi _1/2) _0.9Ba _0.1TiO ₃ nanocrystals

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