Lattice Expansion in Metal Oxide Nanoparticles: MgO, Co3O4, & Fe3O4

Philip P. Rodenbough, Chengjunyi Zheng, Yuxuan Liu, Chenyuan Hui, Yuxuan Xia, Ziying Ran, Yanjun Hu, Siu Wai Chan, W. Wong-Ng

Research output: Contribution to journalArticle

Abstract

Uniform sets of mono-crystalline nanoparticles ranging from 6 nm to over 100 nm were prepared for the MgO, Co3O4, and Fe3O4 oxide systems. The nanoparticles were characterized by transmission electron microscopy (TEM) and x-ray diffraction (XRD). A careful analysis shows increased lattice parameter for smaller nanoparticles of each oxide system: 0.47% expansion from bulk for 7 nm MgO crystallites, 0.15% expansion from bulk for 9 nm Co3O4 crystallites, and 0.13% expansion from bulk for 6 nm Fe3O4 crystallites. The compressive surface stresses and expansion energies against hydrostatic pressure for each oxide system were calculated, respectively, to be 4.13 N/m and 1.8 meV/formula unit for MgO, 3.09 N/m and 0.87 meV/formula unit for Co3O4, and 1.26 N/m and 0.67 meV/formula unit for Fe3O4. The fundamental understanding of oxide nanoparticle mechanics as presented here will facilitate integration of these materials into technological applications in a rationally designed manner.

Original languageEnglish (US)
Pages (from-to)384-392
Number of pages9
JournalJournal of the American Ceramic Society
Volume100
Issue number1
DOIs
StatePublished - Jan 1 2017

Fingerprint

Oxides
Metals
Crystallites
oxide
Nanoparticles
hydrostatic pressure
Hydrostatic pressure
diffraction
mechanics
Lattice constants
transmission electron microscopy
Mechanics
Diffraction
Crystalline materials
Transmission electron microscopy
X rays
nanoparticle
metal oxide
energy

Keywords

  • cobalt/cobalt compounds
  • crystals/crystallization
  • iron/iron compounds
  • magnesium oxide
  • nanomaterials

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Cite this

Rodenbough, P. P., Zheng, C., Liu, Y., Hui, C., Xia, Y., Ran, Z., ... Wong-Ng, W. (2017). Lattice Expansion in Metal Oxide Nanoparticles: MgO, Co3O4, & Fe3O4. Journal of the American Ceramic Society, 100(1), 384-392. https://doi.org/10.1111/jace.14478

Lattice Expansion in Metal Oxide Nanoparticles : MgO, Co3O4, & Fe3O4. / Rodenbough, Philip P.; Zheng, Chengjunyi; Liu, Yuxuan; Hui, Chenyuan; Xia, Yuxuan; Ran, Ziying; Hu, Yanjun; Chan, Siu Wai; Wong-Ng, W.

In: Journal of the American Ceramic Society, Vol. 100, No. 1, 01.01.2017, p. 384-392.

Research output: Contribution to journalArticle

Rodenbough, PP, Zheng, C, Liu, Y, Hui, C, Xia, Y, Ran, Z, Hu, Y, Chan, SW & Wong-Ng, W 2017, 'Lattice Expansion in Metal Oxide Nanoparticles: MgO, Co3O4, & Fe3O4', Journal of the American Ceramic Society, vol. 100, no. 1, pp. 384-392. https://doi.org/10.1111/jace.14478
Rodenbough, Philip P. ; Zheng, Chengjunyi ; Liu, Yuxuan ; Hui, Chenyuan ; Xia, Yuxuan ; Ran, Ziying ; Hu, Yanjun ; Chan, Siu Wai ; Wong-Ng, W. / Lattice Expansion in Metal Oxide Nanoparticles : MgO, Co3O4, & Fe3O4. In: Journal of the American Ceramic Society. 2017 ; Vol. 100, No. 1. pp. 384-392.
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