Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study

Abstract Platelets of strontium hexaferrite (SrFe12O19, SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy and X-...

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Autores principales:	G. D. Soria, P. Jenus, J. F. Marco, A. Mandziak, M. Sanchez-Arenillas, F. Moutinho, J. E. Prieto, P. Prieto, J. Cerdá, C. Tejera-Centeno, S. Gallego, M. Foerster, L. Aballe, M. Valvidares, H. B. Vasili, E. Pereiro, A. Quesada, J. de la Figuera
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a532ba73bb8b4f00b62515dfc1b3f441
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spelling	oai:doaj.org-article:a532ba73bb8b4f00b62515dfc1b3f4412021-12-02T15:09:45ZStrontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study10.1038/s41598-019-48010-w2045-2322https://doaj.org/article/a532ba73bb8b4f00b62515dfc1b3f4412019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-48010-whttps://doaj.org/toc/2045-2322Abstract Platelets of strontium hexaferrite (SrFe12O19, SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy and X-ray absorption based-measurements including spectroscopy and microscopy on the iron-L edges and the oxygen-K edge, allowing us to establish the differences and similarities between our synthesized nanostructures and commercial powders. The Mössbauer spectra reveal a greater contribution of iron tetrahedral sites in platelets in comparison to pure bulk material. For reference, high-resolution absorption and dichroic spectra have also been measured both from the platelets and from pure bulk material. The O-K edge has been reproduced by density functional theory calculations. Out-of-plane domains were observed with 180° domain walls less than 20 nm width, in good agreement with micromagnetic simulations.G. D. SoriaP. JenusJ. F. MarcoA. MandziakM. Sanchez-ArenillasF. MoutinhoJ. E. PrietoP. PrietoJ. CerdáC. Tejera-CentenoS. GallegoM. FoersterL. AballeM. ValvidaresH. B. VasiliE. PereiroA. QuesadaJ. de la FigueraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-13 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q G. D. Soria P. Jenus J. F. Marco A. Mandziak M. Sanchez-Arenillas F. Moutinho J. E. Prieto P. Prieto J. Cerdá C. Tejera-Centeno S. Gallego M. Foerster L. Aballe M. Valvidares H. B. Vasili E. Pereiro A. Quesada J. de la Figuera Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study
description	Abstract Platelets of strontium hexaferrite (SrFe12O19, SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy and X-ray absorption based-measurements including spectroscopy and microscopy on the iron-L edges and the oxygen-K edge, allowing us to establish the differences and similarities between our synthesized nanostructures and commercial powders. The Mössbauer spectra reveal a greater contribution of iron tetrahedral sites in platelets in comparison to pure bulk material. For reference, high-resolution absorption and dichroic spectra have also been measured both from the platelets and from pure bulk material. The O-K edge has been reproduced by density functional theory calculations. Out-of-plane domains were observed with 180° domain walls less than 20 nm width, in good agreement with micromagnetic simulations.
format	article
author	G. D. Soria P. Jenus J. F. Marco A. Mandziak M. Sanchez-Arenillas F. Moutinho J. E. Prieto P. Prieto J. Cerdá C. Tejera-Centeno S. Gallego M. Foerster L. Aballe M. Valvidares H. B. Vasili E. Pereiro A. Quesada J. de la Figuera
author_facet	G. D. Soria P. Jenus J. F. Marco A. Mandziak M. Sanchez-Arenillas F. Moutinho J. E. Prieto P. Prieto J. Cerdá C. Tejera-Centeno S. Gallego M. Foerster L. Aballe M. Valvidares H. B. Vasili E. Pereiro A. Quesada J. de la Figuera
author_sort	G. D. Soria
title	Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study
title_short	Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study
title_full	Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study
title_fullStr	Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study
title_full_unstemmed	Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study
title_sort	strontium hexaferrite platelets: a comprehensive soft x-ray absorption and mössbauer spectroscopy study
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/a532ba73bb8b4f00b62515dfc1b3f441
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Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study

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