Nanoscale control of phase variants in strain-engineered BiFeO3

Rama K. Vasudevan, Yunya Liu, Jiangyu Li, Wen I. Liang, Amit Kumar, Stephen Jesse, Yi Chun Chen, Ying Hao Chu, Valanoor Nagarajan, Sergei V. Kalinin

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Development of magnetoelectric, electromechanical, and photovoltaic devices based on mixed-phase rhombohedral-tetragonal (R-T) BiFeO3 (BFO) systems is possible only if the control of the engineered R phase variants is realized. Accordingly, we explore the mechanism of a bias induced phase transformation in this system. Single point spectroscopy demonstrates that the T → R transition is activated at lower voltages compared to T → -T polarization switching. With phase field modeling, the transition is shown to be electrically driven. We further demonstrate that symmetry of formed R-phase rosettes can be broken by a proximal probe motion, allowing controlled creation of R variants with defined orientation. This approach opens a pathway to designing next-generation magnetoelectronic and data storage devices in the nanoscale.

Original languageEnglish
Pages (from-to)3346-3354
Number of pages9
JournalNano letters
Volume11
Issue number8
DOIs
Publication statusPublished - 2011 Aug 10

Fingerprint

Magnetoelectronics
Phase transitions
Spectroscopy
Polarization
Data storage equipment
Electric potential
electromechanical devices
data storage
low voltage
phase transformations
probes
symmetry
polarization
spectroscopy

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Vasudevan, R. K., Liu, Y., Li, J., Liang, W. I., Kumar, A., Jesse, S., ... Kalinin, S. V. (2011). Nanoscale control of phase variants in strain-engineered BiFeO3. Nano letters, 11(8), 3346-3354. https://doi.org/10.1021/nl201719w
Vasudevan, Rama K. ; Liu, Yunya ; Li, Jiangyu ; Liang, Wen I. ; Kumar, Amit ; Jesse, Stephen ; Chen, Yi Chun ; Chu, Ying Hao ; Nagarajan, Valanoor ; Kalinin, Sergei V. / Nanoscale control of phase variants in strain-engineered BiFeO3. In: Nano letters. 2011 ; Vol. 11, No. 8. pp. 3346-3354.
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Vasudevan, RK, Liu, Y, Li, J, Liang, WI, Kumar, A, Jesse, S, Chen, YC, Chu, YH, Nagarajan, V & Kalinin, SV 2011, 'Nanoscale control of phase variants in strain-engineered BiFeO3', Nano letters, vol. 11, no. 8, pp. 3346-3354. https://doi.org/10.1021/nl201719w

Nanoscale control of phase variants in strain-engineered BiFeO3. / Vasudevan, Rama K.; Liu, Yunya; Li, Jiangyu; Liang, Wen I.; Kumar, Amit; Jesse, Stephen; Chen, Yi Chun; Chu, Ying Hao; Nagarajan, Valanoor; Kalinin, Sergei V.

In: Nano letters, Vol. 11, No. 8, 10.08.2011, p. 3346-3354.

Research output: Contribution to journalArticle

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Vasudevan RK, Liu Y, Li J, Liang WI, Kumar A, Jesse S et al. Nanoscale control of phase variants in strain-engineered BiFeO3. Nano letters. 2011 Aug 10;11(8):3346-3354. https://doi.org/10.1021/nl201719w