A Generalizable Multigram Synthesis and Mechanistic Investigation of YMnO3 Nanoplates

Coray L. McBean, Crystal S. Lewis, Amanda L. Tiano, Jack W. Simonson, Myung Geun Han, William J. Gannon, Shiyu Yue, Jonathan M. Patete, Adam A. Corrao, Alexander C. Santulli, Lijun Wu, Meigan C. Aronson, Yimei Zhu, Stanislaus S. Wong

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The reproducible gram-scale synthesis of crystalline nanoscale multiferroics is critical for the development of the next generation of commercially relevant electronic devices. Of the subset of multiferroic materials, yttrium manganese oxide (YMnO3) is highly attractive, because of its large magneto-electric coupling constants and the recent observation of giant polarization under pressure in these types of rare earth manganites. Utilizing a unique synthetic methodology that combines metal-oleate thermal degradation with the use of a molten salt protocol, we were able to reproducibly generate monodisperse distributions of morphologically distinctive yttrium manganese oxides. Specifically, using a molten NaCl flux, we were able to synthesize phase-pure, single-crystalline hexagonal YMnO3 nanoplates, measuring 441 ± 241 nm in diameter and 46 ± 6 nm in height. Moreover, these nanoplates gave rise to multiferroic behavior, which was confirmed by the observation of a ferroelectric phase from a combination of high-resolution TEM (HRTEM) and selected-area electron diffraction (SAED) analysis. Magnetic measurements are consistent with the onset of a spin glass state below 5 K. To highlight the generalizability of the synthetic method we have developed herein, as a demonstration of principle, we have also successfully used the same protocol to produce nanocubes of lanthanum aluminum oxide (LaAlO3).

Original languageEnglish
Pages (from-to)5573-5585
Number of pages13
JournalIndustrial and Engineering Chemistry Research
Volume56
Issue number19
DOIs
StatePublished - May 17 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

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