Structural and morphology comparison between m-LaVO4 and LaVO3 compounds prepared by sol-gel acrylamide polymerization and solid state reaction

G. Herrera; E. Chavira; J. Jiménez-Mier; A. Ordoñez; E. Fregoso-Israel; L. Baños; E. Bucio; J. Guzmán; O. Novelo; C. Flores

doi:10.1016/j.jallcom.2008.12.146

Structural and morphology comparison between m-LaVO₄ and LaVO₃ compounds prepared by sol-gel acrylamide polymerization and solid state reaction

G. Herrera, E. Chavira, J. Jiménez-Mier, A. Ordoñez, E. Fregoso-Israel, L. Baños, E. Bucio, J. Guzmán, O. Novelo, C. Flores

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

26 Scopus citations

Abstract

We contrast the production of LaVO₃ polycrystalline samples obtained by reduction of m-LaVO₄ prepared by sol-gel acrylamide polymerization (SGAP) and solid state reaction (SSR). For SGAP the formation of m-LaVO₄ occurs at 400 °C, for SSR at 1400 °C. For m-LaVO₄-SGAP we observe a homogeneous morphology with needle-shaped grains of 50 nm average size. The SSR presents a broader size distribution in the micrometer range. Both m-LaVO₄ samples were reduced into LaVO₃ using a Zr rod at 850 °C in vacuum. LaVO₃-SGAP presents a homogeneous grain distribution with an average size of 745 nm. LaVO₃-SSR has an average size of 3.45 μm. The stoichiometry of all compounds was confirmed by energy dispersive X-ray spectroscopy. X-ray powder diffraction and transmission electron microscopy give crystal structures in agreement with those reported in the literature.

Original language	English
Pages (from-to)	511-519
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	479
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.12.146
State	Published - 24 Jun 2009
Externally published	Yes

Keywords

Atomic force microscopy (AFM)
Ceramics
Microstructure
Sol-gel processes
X-ray diffraction

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10.1016/j.jallcom.2008.12.146

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Herrera, G., Chavira, E., Jiménez-Mier, J., Ordoñez, A., Fregoso-Israel, E., Baños, L., Bucio, E., Guzmán, J., Novelo, O., & Flores, C. (2009). Structural and morphology comparison between m-LaVO₄ and LaVO₃ compounds prepared by sol-gel acrylamide polymerization and solid state reaction. Journal of Alloys and Compounds, 479(1-2), 511-519. https://doi.org/10.1016/j.jallcom.2008.12.146

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title = "Structural and morphology comparison between m-LaVO4 and LaVO3 compounds prepared by sol-gel acrylamide polymerization and solid state reaction",

abstract = "We contrast the production of LaVO3 polycrystalline samples obtained by reduction of m-LaVO4 prepared by sol-gel acrylamide polymerization (SGAP) and solid state reaction (SSR). For SGAP the formation of m-LaVO4 occurs at 400 °C, for SSR at 1400 °C. For m-LaVO4-SGAP we observe a homogeneous morphology with needle-shaped grains of 50 nm average size. The SSR presents a broader size distribution in the micrometer range. Both m-LaVO4 samples were reduced into LaVO3 using a Zr rod at 850 °C in vacuum. LaVO3-SGAP presents a homogeneous grain distribution with an average size of 745 nm. LaVO3-SSR has an average size of 3.45 μm. The stoichiometry of all compounds was confirmed by energy dispersive X-ray spectroscopy. X-ray powder diffraction and transmission electron microscopy give crystal structures in agreement with those reported in the literature.",

keywords = "Atomic force microscopy (AFM), Ceramics, Microstructure, Sol-gel processes, X-ray diffraction",

author = "G. Herrera and E. Chavira and J. Jim{\'e}nez-Mier and A. Ordo{\~n}ez and E. Fregoso-Israel and L. Ba{\~n}os and E. Bucio and J. Guzm{\'a}n and O. Novelo and C. Flores",

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Herrera, G, Chavira, E, Jiménez-Mier, J, Ordoñez, A, Fregoso-Israel, E, Baños, L, Bucio, E, Guzmán, J, Novelo, O & Flores, C 2009, 'Structural and morphology comparison between m-LaVO₄ and LaVO₃ compounds prepared by sol-gel acrylamide polymerization and solid state reaction', Journal of Alloys and Compounds, vol. 479, no. 1-2, pp. 511-519. https://doi.org/10.1016/j.jallcom.2008.12.146

TY - JOUR

T1 - Structural and morphology comparison between m-LaVO4 and LaVO3 compounds prepared by sol-gel acrylamide polymerization and solid state reaction

AU - Herrera, G.

AU - Chavira, E.

AU - Jiménez-Mier, J.

AU - Ordoñez, A.

AU - Fregoso-Israel, E.

AU - Baños, L.

AU - Bucio, E.

AU - Guzmán, J.

AU - Novelo, O.

AU - Flores, C.

PY - 2009/6/24

Y1 - 2009/6/24

N2 - We contrast the production of LaVO3 polycrystalline samples obtained by reduction of m-LaVO4 prepared by sol-gel acrylamide polymerization (SGAP) and solid state reaction (SSR). For SGAP the formation of m-LaVO4 occurs at 400 °C, for SSR at 1400 °C. For m-LaVO4-SGAP we observe a homogeneous morphology with needle-shaped grains of 50 nm average size. The SSR presents a broader size distribution in the micrometer range. Both m-LaVO4 samples were reduced into LaVO3 using a Zr rod at 850 °C in vacuum. LaVO3-SGAP presents a homogeneous grain distribution with an average size of 745 nm. LaVO3-SSR has an average size of 3.45 μm. The stoichiometry of all compounds was confirmed by energy dispersive X-ray spectroscopy. X-ray powder diffraction and transmission electron microscopy give crystal structures in agreement with those reported in the literature.

AB - We contrast the production of LaVO3 polycrystalline samples obtained by reduction of m-LaVO4 prepared by sol-gel acrylamide polymerization (SGAP) and solid state reaction (SSR). For SGAP the formation of m-LaVO4 occurs at 400 °C, for SSR at 1400 °C. For m-LaVO4-SGAP we observe a homogeneous morphology with needle-shaped grains of 50 nm average size. The SSR presents a broader size distribution in the micrometer range. Both m-LaVO4 samples were reduced into LaVO3 using a Zr rod at 850 °C in vacuum. LaVO3-SGAP presents a homogeneous grain distribution with an average size of 745 nm. LaVO3-SSR has an average size of 3.45 μm. The stoichiometry of all compounds was confirmed by energy dispersive X-ray spectroscopy. X-ray powder diffraction and transmission electron microscopy give crystal structures in agreement with those reported in the literature.

KW - Atomic force microscopy (AFM)

KW - Ceramics

KW - Microstructure

KW - Sol-gel processes

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=67349153418&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2008.12.146

DO - 10.1016/j.jallcom.2008.12.146

M3 - Artículo

SN - 0925-8388

VL - 479

SP - 511

EP - 519

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Structural and morphology comparison between m-LaVO₄ and LaVO₃ compounds prepared by sol-gel acrylamide polymerization and solid state reaction

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Keywords

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