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

doi:10.1016/S1293-2558(00)01127-4

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

Northwestern University

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	17-23
Number of pages	7
Journal	Solid State Sciences
Volume	3
Issue number	1-2
DOIs	https://doi.org/10.1016/S1293-2558(00)01127-4
Publication status	Published - 2001

Keywords

EELS
Electron diffraction
LaCuMoO
LaCuVO
Transmission electron microscopy

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{14023ea23ac249f689366a51da712e49,

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

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.",

keywords = "EELS, Electron diffraction, LaCuMoO, LaCuVO, Transmission electron microscopy",

author = "Sylvie Malo and {Vander Griend}, {Douglas A.} and Poeppelmeier, {Kenneth R.} and Yanguo Wang and Dravid, {Vinayak P.}",

note = "Funding Information: We would like to thank Luke Brewer for his help in collecting the CBED pattern. This work is supported by a National Science Foundation (NSF) graduate fellowship for DAVG, by National Science Foundation (Award No. DMR-9120000) through the Science and Technology Center for Superconductivity, and made use of the Central Facilities at the Materials Research Center of Northwestern University (NSF Award No. DMR-0076097). VPD was partially supported by US DOE Grant No DE-FGOZ-92ER45475. ",

year = "2001",

doi = "10.1016/S1293-2558(00)01127-4",

language = "English",

volume = "3",

pages = "17--23",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier Masson SAS",

number = "1-2",

}

TY - JOUR

T1 - Crystal symmetry of La3Cu2VO9 and La4Cu3MoO12 derived from the YA1O3 hexagonal structure by transmission electron microscopy

AU - Malo, Sylvie

AU - Vander Griend, Douglas A.

AU - Poeppelmeier, Kenneth R.

AU - Wang, Yanguo

AU - Dravid, Vinayak P.

N1 - Funding Information: We would like to thank Luke Brewer for his help in collecting the CBED pattern. This work is supported by a National Science Foundation (NSF) graduate fellowship for DAVG, by National Science Foundation (Award No. DMR-9120000) through the Science and Technology Center for Superconductivity, and made use of the Central Facilities at the Materials Research Center of Northwestern University (NSF Award No. DMR-0076097). VPD was partially supported by US DOE Grant No DE-FGOZ-92ER45475.

PY - 2001

Y1 - 2001

N2 - 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.

AB - 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.

KW - EELS

KW - Electron diffraction

KW - LaCuMoO

KW - LaCuVO

KW - Transmission electron microscopy

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