Effect of lanthanide on the microstructure and structure of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} nanoparticles with Ln=La, Pr, Nd, Sm and Gd prepared by the polymer precursor method
Abstract
The synthesis of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} perovskite nanoparticles by the polymer precursor method showed a strong intrinsic dependence with different lanthanides (Ln=La, Pr, Nd, Sm and Gd). The polymerization level reached in the polymer precursor was proportional to the atomic number of lanthanide with exception of samarium, which showed the formation of a different precursor based in a citrate chelate with ethyleneglycol bonded as adduct. The increasing level of polymerization of the polymer precursors showed the formation of large-size perovskite nanoparticles after its calcination. SAXS and TEM analyses suggested that nanoparticles obtained, using this method, have a squared-like microstructure in connection with the polymer precursor microstructure. Structural analysis showed an orthorhombic structure with a slight decline in the Jahn–Teller distortion when the atomic number of lanthanide increases. Mössbauer spectroscopy showed the presence of a majority site in agreement with the Pbnm orthorhombic structure best fitted with Rietveld refinements and in some cases, a more distorted site attributed to local inhomogeneities and oxygen vacancies. - Highlights: • Precursor polymerization level is lower in the presence of lighter lanthanides. • Lighter lanthanide perovskite nanoparticles after calcination are lower-sized. • Nanoparticles obtained by this method have lamellae microstructure. • Jahn–Teller distortion declinesmore »
- Authors:
-
- Centro NanoMat/Cryssmat Lab/Cátedra de Física—DETEMA, Facultad de Química—UdelaR, Montevideo (Uruguay)
- Departamento de Física de La Plata, Universidad Nacional de La Plata, La Plata (Argentina)
- Laboratorio Central de microscopía electrónica, Universidad Federal de Santa Catarina, Florianópolis (Brazil)
- Publication Date:
- OSTI Identifier:
- 22443515
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Solid State Chemistry
- Additional Journal Information:
- Journal Volume: 221; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CALCINATION; CHELATES; CITRATES; LAMELLAE; MICROSTRUCTURE; NANOPARTICLES; ORTHORHOMBIC LATTICES; OXYGEN; PEROVSKITE; POLYMERIZATION; POLYMERS; PRECURSOR; SAMARIUM; SMALL ANGLE SCATTERING; SPECTROSCOPY; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
Citation Formats
Romero, Mariano, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Faccio, Ricardo, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Martínez, Javier, Instituto de Física de La Plata, CCT-La Plata—CONICET, La Plata, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Corrientes, Pardo, Helena, Montenegro, Benjamín, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Plá Cid, Cristiani Campos, Pasa, André A., and others, and. Effect of lanthanide on the microstructure and structure of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} nanoparticles with Ln=La, Pr, Nd, Sm and Gd prepared by the polymer precursor method. United States: N. p., 2015.
Web. doi:10.1016/J.JSSC.2014.10.028.
Romero, Mariano, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Faccio, Ricardo, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Martínez, Javier, Instituto de Física de La Plata, CCT-La Plata—CONICET, La Plata, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Corrientes, Pardo, Helena, Montenegro, Benjamín, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Plá Cid, Cristiani Campos, Pasa, André A., & others, and. Effect of lanthanide on the microstructure and structure of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} nanoparticles with Ln=La, Pr, Nd, Sm and Gd prepared by the polymer precursor method. United States. https://doi.org/10.1016/J.JSSC.2014.10.028
Romero, Mariano, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Faccio, Ricardo, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Martínez, Javier, Instituto de Física de La Plata, CCT-La Plata—CONICET, La Plata, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Corrientes, Pardo, Helena, Montenegro, Benjamín, Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo, Plá Cid, Cristiani Campos, Pasa, André A., and others, and. 2015.
"Effect of lanthanide on the microstructure and structure of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} nanoparticles with Ln=La, Pr, Nd, Sm and Gd prepared by the polymer precursor method". United States. https://doi.org/10.1016/J.JSSC.2014.10.028.
@article{osti_22443515,
title = {Effect of lanthanide on the microstructure and structure of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} nanoparticles with Ln=La, Pr, Nd, Sm and Gd prepared by the polymer precursor method},
author = {Romero, Mariano and Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo and Faccio, Ricardo and Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo and Martínez, Javier and Instituto de Física de La Plata, CCT-La Plata—CONICET, La Plata and Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Corrientes and Pardo, Helena and Montenegro, Benjamín and Centro Interdisciplinario de Nanotecnología, Química y Física de Materiales—UdelaR, Montevideo and Plá Cid, Cristiani Campos and Pasa, André A. and others, and},
abstractNote = {The synthesis of LnMn{sub 0.5}Fe{sub 0.5}O{sub 3} perovskite nanoparticles by the polymer precursor method showed a strong intrinsic dependence with different lanthanides (Ln=La, Pr, Nd, Sm and Gd). The polymerization level reached in the polymer precursor was proportional to the atomic number of lanthanide with exception of samarium, which showed the formation of a different precursor based in a citrate chelate with ethyleneglycol bonded as adduct. The increasing level of polymerization of the polymer precursors showed the formation of large-size perovskite nanoparticles after its calcination. SAXS and TEM analyses suggested that nanoparticles obtained, using this method, have a squared-like microstructure in connection with the polymer precursor microstructure. Structural analysis showed an orthorhombic structure with a slight decline in the Jahn–Teller distortion when the atomic number of lanthanide increases. Mössbauer spectroscopy showed the presence of a majority site in agreement with the Pbnm orthorhombic structure best fitted with Rietveld refinements and in some cases, a more distorted site attributed to local inhomogeneities and oxygen vacancies. - Highlights: • Precursor polymerization level is lower in the presence of lighter lanthanides. • Lighter lanthanide perovskite nanoparticles after calcination are lower-sized. • Nanoparticles obtained by this method have lamellae microstructure. • Jahn–Teller distortion declines for heavier lanthanide perovskites. • Oxygen vacancy phase was observed in lighter lanthanide perovskites.},
doi = {10.1016/J.JSSC.2014.10.028},
url = {https://www.osti.gov/biblio/22443515},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 221,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2015},
month = {Thu Jan 15 00:00:00 EST 2015}
}