Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction

Mixed ferrites Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) with orthorhombic perovskite structure isotypic with GdFeO(3) were synthesized by solid-state reaction technique in air at 1473 K. Structural parameters obtained at room temperature prove a formation of continuous solid solutions in the Sm...

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Autores principales: Pavlovska, Olena, Vasylechko, Leonid, Buryy, Oleh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769243/
https://www.ncbi.nlm.nih.gov/pubmed/26920152
http://dx.doi.org/10.1186/s11671-016-1328-6
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author Pavlovska, Olena
Vasylechko, Leonid
Buryy, Oleh
author_facet Pavlovska, Olena
Vasylechko, Leonid
Buryy, Oleh
author_sort Pavlovska, Olena
collection PubMed
description Mixed ferrites Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) with orthorhombic perovskite structure isotypic with GdFeO(3) were synthesized by solid-state reaction technique in air at 1473 K. Structural parameters obtained at room temperature prove a formation of continuous solid solutions in the SmFeO(3)–PrFeO(3) and SmFeO(3)–NdFeO(3) pseudo-binary systems. Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) show strongly anisotropic nonlinear thermal expansion: thermal expansion in the b direction is twice lower than in the a and c directions. The average linear thermal expansion coefficients of Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) in the temperature range of 298–1173 K are in the limits of (9.0–11.1) × 10(−6) K(−1), which is close to the values reported for the parent RFeO(3) compounds. Subtle anomalies in the lattice expansion of Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) detected at 650–750 K reflect magnetoelastic coupling at the magnetic ordering temperature T(N).
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spelling pubmed-47692432016-03-29 Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction Pavlovska, Olena Vasylechko, Leonid Buryy, Oleh Nanoscale Res Lett Nano Express Mixed ferrites Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) with orthorhombic perovskite structure isotypic with GdFeO(3) were synthesized by solid-state reaction technique in air at 1473 K. Structural parameters obtained at room temperature prove a formation of continuous solid solutions in the SmFeO(3)–PrFeO(3) and SmFeO(3)–NdFeO(3) pseudo-binary systems. Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) show strongly anisotropic nonlinear thermal expansion: thermal expansion in the b direction is twice lower than in the a and c directions. The average linear thermal expansion coefficients of Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) in the temperature range of 298–1173 K are in the limits of (9.0–11.1) × 10(−6) K(−1), which is close to the values reported for the parent RFeO(3) compounds. Subtle anomalies in the lattice expansion of Sm(0.5)Pr(0.5)FeO(3) and Sm(0.5)Nd(0.5)FeO(3) detected at 650–750 K reflect magnetoelastic coupling at the magnetic ordering temperature T(N). Springer US 2016-02-27 /pmc/articles/PMC4769243/ /pubmed/26920152 http://dx.doi.org/10.1186/s11671-016-1328-6 Text en © Pavlovska et al. 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Pavlovska, Olena
Vasylechko, Leonid
Buryy, Oleh
Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction
title Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction
title_full Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction
title_fullStr Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction
title_full_unstemmed Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction
title_short Thermal Behaviour of Sm(0.5)R(0.5)FeO(3) (R = Pr, Nd) Probed by High-Resolution X-ray Synchrotron Powder Diffraction
title_sort thermal behaviour of sm(0.5)r(0.5)feo(3) (r = pr, nd) probed by high-resolution x-ray synchrotron powder diffraction
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769243/
https://www.ncbi.nlm.nih.gov/pubmed/26920152
http://dx.doi.org/10.1186/s11671-016-1328-6
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