Unveiling the Role of CNTs in the Phase Formation of One-Dimensional Ferroelectrics

Amit Mahajan, Ian M. Reaney, Pedro M F J Costa, Angus I. Kingon, Z. Kónya, Á. Kukovecz, Paula M. Vilarinho

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Carbon nanotubes (CNTs) have the potential to act as templates or bottom electrodes for three-dimensional (3D) capacitor arrays, which utilize one-dimensional (1D) ferroelectric nanostructures to increase the memory size and density. However, growing a ferroelectric on the surface of CNTs is nontrivial. Here, we demonstrate that multiwalled (MW) CNTs decrease the time and temperature for the formation of lead zirconium titanate Pb(Zr1-xTix)O3 (PZT) by ∼100 °C commensurate with a decrease in activation energy from 68 ± 15 to 27 ± 2 kJ/mol. As a consequence, monophasic PZT was obtained at 575°C for MWCNTs/PZT, but for pure PZT, traces of pyrochlore were still present at 650°C, where the PZT phase formed due to homogeneous nucleation. The piezoelectric nature of MWCNTs/PZT synthesized at 500°C for 1 h was proven. Although further work is required to prove the concept of 3D capacitor arrays, our result suggests that it is feasible to utilize MWCNTs as templates/electrodes for the formation of 1D PZT nanoferroelectrics.

Original languageEnglish
Pages (from-to)6713-6720
Number of pages8
JournalLangmuir
Volume31
Issue number24
DOIs
Publication statusPublished - Jun 23 2015

Fingerprint

Carbon Nanotubes
Ferroelectric materials
Carbon nanotubes
Capacitors
carbon nanotubes
Electrodes
Multiwalled carbon nanotubes (MWCN)
capacitors
templates
Zirconium
Nanostructures
Nucleation
electrodes
Activation energy
Lead
Data storage equipment
nucleation
activation energy
Temperature
temperature

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Mahajan, A., Reaney, I. M., Costa, P. M. F. J., Kingon, A. I., Kónya, Z., Kukovecz, Á., & Vilarinho, P. M. (2015). Unveiling the Role of CNTs in the Phase Formation of One-Dimensional Ferroelectrics. Langmuir, 31(24), 6713-6720. https://doi.org/10.1021/acs.langmuir.5b00866

Unveiling the Role of CNTs in the Phase Formation of One-Dimensional Ferroelectrics. / Mahajan, Amit; Reaney, Ian M.; Costa, Pedro M F J; Kingon, Angus I.; Kónya, Z.; Kukovecz, Á.; Vilarinho, Paula M.

In: Langmuir, Vol. 31, No. 24, 23.06.2015, p. 6713-6720.

Research output: Contribution to journalArticle

Mahajan, A, Reaney, IM, Costa, PMFJ, Kingon, AI, Kónya, Z, Kukovecz, Á & Vilarinho, PM 2015, 'Unveiling the Role of CNTs in the Phase Formation of One-Dimensional Ferroelectrics', Langmuir, vol. 31, no. 24, pp. 6713-6720. https://doi.org/10.1021/acs.langmuir.5b00866
Mahajan, Amit ; Reaney, Ian M. ; Costa, Pedro M F J ; Kingon, Angus I. ; Kónya, Z. ; Kukovecz, Á. ; Vilarinho, Paula M. / Unveiling the Role of CNTs in the Phase Formation of One-Dimensional Ferroelectrics. In: Langmuir. 2015 ; Vol. 31, No. 24. pp. 6713-6720.
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