Crystal symmetry of La3Cu2VO9 and La4Cu3MoO12 derived from the YA1O3 hexagonal structure by transmission electron microscopy

Sylvie Malo, Douglas A. Vander Griend, Kenneth R Poeppelmeier, Yanguo Wang, Vinayak P. Dravid

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

La4Cu3MoO12 and La3Cu2VO9, homeotypes of YA1O3, an ABO3 hexagonal phase, have been investigated using a variety of transmission electron microscopy techniques. Both compounds possess the same hexagonal subcell but exhibit different supercells. The unit cell parameters and symmetry have been determined using selected area and convergent beam electron diffraction techniques. For La3Cu2VO9, electron energy loss spectroscopy and energy dispersive X-ray spectroscopy were used to determine the oxidation-state of vanadium and the cation stoichiometry, respectively, which conforms to La3Cu2VO9. This paper highlights the need for multitechnique approaches to complex oxide structures.

Original languageEnglish
Pages (from-to)17-23
Number of pages7
JournalSolid State Sciences
Volume3
Issue number1-2
DOIs
Publication statusPublished - 2001

Fingerprint

Vanadium
Electron energy loss spectroscopy
Crystal symmetry
Electron diffraction
Stoichiometry
Oxides
Cations
Positive ions
Transmission electron microscopy
Oxidation
transmission electron microscopy
symmetry
vanadium
spectroscopy
crystals
stoichiometry
electron diffraction
energy dissipation
electron energy
cations

Keywords

  • EELS
  • Electron diffraction
  • LaCuVO
  • LaCuMoO
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Crystal symmetry of La3Cu2VO9 and La4Cu3MoO12 derived from the YA1O3 hexagonal structure by transmission electron microscopy. / Malo, Sylvie; Vander Griend, Douglas A.; Poeppelmeier, Kenneth R; Wang, Yanguo; Dravid, Vinayak P.

In: Solid State Sciences, Vol. 3, No. 1-2, 2001, p. 17-23.

Research output: Contribution to journalArticle

Malo, Sylvie ; Vander Griend, Douglas A. ; Poeppelmeier, Kenneth R ; Wang, Yanguo ; Dravid, Vinayak P. / Crystal symmetry of La3Cu2VO9 and La4Cu3MoO12 derived from the YA1O3 hexagonal structure by transmission electron microscopy. In: Solid State Sciences. 2001 ; Vol. 3, No. 1-2. pp. 17-23.
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