A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)

In this paper, we present a detailed Raman study of the non-multiferroic compounds PrMnO (3) and NdMnO (3) and the multiferroic compounds TbMnO (3) and DyMnO (3) as a function of temperature and magnetic field. All studied systems show anomalous phonon shifts close to the Néel transition T (N). In P...

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Autores principales: Mansouri, Sabeur, Jandl, Serge, Mukhin, Alexander, Ivanov, Vsevolod Yu, Balbashov, Anatoly
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653772/
https://www.ncbi.nlm.nih.gov/pubmed/29061977
http://dx.doi.org/10.1038/s41598-017-12714-8
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author Mansouri, Sabeur
Jandl, Serge
Mukhin, Alexander
Ivanov, Vsevolod Yu
Balbashov, Anatoly
author_facet Mansouri, Sabeur
Jandl, Serge
Mukhin, Alexander
Ivanov, Vsevolod Yu
Balbashov, Anatoly
author_sort Mansouri, Sabeur
collection PubMed
description In this paper, we present a detailed Raman study of the non-multiferroic compounds PrMnO (3) and NdMnO (3) and the multiferroic compounds TbMnO (3) and DyMnO (3) as a function of temperature and magnetic field. All studied systems show anomalous phonon shifts close to the Néel transition T (N). In PrMnO (3) and NdMnO (3), the frequency softenings are partly attributed to an orbital-spin-phonon coupling whereas in TbMnO (3) and DyMnO (3), the relatively weak frequency shifts are rather attributed to an expansion of the Mn−O bond lengths. On the other hand, the frequencies of TbMnO (3) phonons are shifted as a function of magnetic field, while those of PrMnO (3) remain unaffected. These frequency shifts are interpreted in terms of local oxygen rearrangements under magnetic field that could play an important role in the multiferroicity of TbMnO (3) and DyMnO (3).
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spelling pubmed-56537722017-10-26 A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3) Mansouri, Sabeur Jandl, Serge Mukhin, Alexander Ivanov, Vsevolod Yu Balbashov, Anatoly Sci Rep Article In this paper, we present a detailed Raman study of the non-multiferroic compounds PrMnO (3) and NdMnO (3) and the multiferroic compounds TbMnO (3) and DyMnO (3) as a function of temperature and magnetic field. All studied systems show anomalous phonon shifts close to the Néel transition T (N). In PrMnO (3) and NdMnO (3), the frequency softenings are partly attributed to an orbital-spin-phonon coupling whereas in TbMnO (3) and DyMnO (3), the relatively weak frequency shifts are rather attributed to an expansion of the Mn−O bond lengths. On the other hand, the frequencies of TbMnO (3) phonons are shifted as a function of magnetic field, while those of PrMnO (3) remain unaffected. These frequency shifts are interpreted in terms of local oxygen rearrangements under magnetic field that could play an important role in the multiferroicity of TbMnO (3) and DyMnO (3). Nature Publishing Group UK 2017-10-23 /pmc/articles/PMC5653772/ /pubmed/29061977 http://dx.doi.org/10.1038/s41598-017-12714-8 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Mansouri, Sabeur
Jandl, Serge
Mukhin, Alexander
Ivanov, Vsevolod Yu
Balbashov, Anatoly
A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)
title A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)
title_full A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)
title_fullStr A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)
title_full_unstemmed A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)
title_short A comparative Raman study between PrMnO(3), NdMnO(3), TbMnO(3) and DyMnO(3)
title_sort comparative raman study between prmno(3), ndmno(3), tbmno(3) and dymno(3)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653772/
https://www.ncbi.nlm.nih.gov/pubmed/29061977
http://dx.doi.org/10.1038/s41598-017-12714-8
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