Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites

Abstract Nanocrystallites of the permanent magnetic material SrFe12O19 were synthesised using a conventional sol-gel (CSG) and a modified sol-gel (MSG) synthesis route. In the MSG synthesis, crystallite growth takes place in a solid NaCl matrix, resulting in freestanding nanocrystallites, as opposed...

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Autores principales:	Anna Zink Eikeland, Marian Stingaciu, Aref Hasen Mamakhel, Matilde Saura-Múzquiz, Mogens Christensen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/988c2bda241e45108b863390840100d2
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spelling	oai:doaj.org-article:988c2bda241e45108b863390840100d22021-12-02T11:40:17ZEnhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites10.1038/s41598-018-25662-82045-2322https://doaj.org/article/988c2bda241e45108b863390840100d22018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25662-8https://doaj.org/toc/2045-2322Abstract Nanocrystallites of the permanent magnetic material SrFe12O19 were synthesised using a conventional sol-gel (CSG) and a modified sol-gel (MSG) synthesis route. In the MSG synthesis, crystallite growth takes place in a solid NaCl matrix, resulting in freestanding nanocrystallites, as opposed to the CSG synthesis, where the produced nanocrystals are strongly intergrown. The resulting nanocrystallites from both methods exhibit similar intrinsic magnetic properties, but significantly different morphology and degree of aggregation. The nanocrystallites were compacted into dense pellets using a Spark Plasma Sintering (SPS) press, this allows investigating the influence of crystallite morphology and the alignment of the nanocrystallites on the magnetic performance. A remarkable correlation was observed between the crystallites morphology and their ability to align in the compaction process. Consequently, a significant enhancement of the maximum energy product was obtained after SPS for the MSG prepared sample (22.0 kJ/m3), compared to CSG sample, which achieved an energy product of 11.6 kJ/m3.Anna Zink EikelandMarian StingaciuAref Hasen MamakhelMatilde Saura-MúzquizMogens ChristensenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anna Zink Eikeland Marian Stingaciu Aref Hasen Mamakhel Matilde Saura-Múzquiz Mogens Christensen Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites
description	Abstract Nanocrystallites of the permanent magnetic material SrFe12O19 were synthesised using a conventional sol-gel (CSG) and a modified sol-gel (MSG) synthesis route. In the MSG synthesis, crystallite growth takes place in a solid NaCl matrix, resulting in freestanding nanocrystallites, as opposed to the CSG synthesis, where the produced nanocrystals are strongly intergrown. The resulting nanocrystallites from both methods exhibit similar intrinsic magnetic properties, but significantly different morphology and degree of aggregation. The nanocrystallites were compacted into dense pellets using a Spark Plasma Sintering (SPS) press, this allows investigating the influence of crystallite morphology and the alignment of the nanocrystallites on the magnetic performance. A remarkable correlation was observed between the crystallites morphology and their ability to align in the compaction process. Consequently, a significant enhancement of the maximum energy product was obtained after SPS for the MSG prepared sample (22.0 kJ/m3), compared to CSG sample, which achieved an energy product of 11.6 kJ/m3.
format	article
author	Anna Zink Eikeland Marian Stingaciu Aref Hasen Mamakhel Matilde Saura-Múzquiz Mogens Christensen
author_facet	Anna Zink Eikeland Marian Stingaciu Aref Hasen Mamakhel Matilde Saura-Múzquiz Mogens Christensen
author_sort	Anna Zink Eikeland
title	Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites
title_short	Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites
title_full	Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites
title_fullStr	Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites
title_full_unstemmed	Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites
title_sort	enhancement of magnetic properties through morphology control of srfe12o19 nanocrystallites
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/988c2bda241e45108b863390840100d2
work_keys_str_mv	AT annazinkeikeland enhancementofmagneticpropertiesthroughmorphologycontrolofsrfe12o19nanocrystallites AT marianstingaciu enhancementofmagneticpropertiesthroughmorphologycontrolofsrfe12o19nanocrystallites AT arefhasenmamakhel enhancementofmagneticpropertiesthroughmorphologycontrolofsrfe12o19nanocrystallites AT matildesauramuzquiz enhancementofmagneticpropertiesthroughmorphologycontrolofsrfe12o19nanocrystallites AT mogenschristensen enhancementofmagneticpropertiesthroughmorphologycontrolofsrfe12o19nanocrystallites
_version_	1718395660703629312

Enhancement of magnetic properties through morphology control of SrFe12O19 nanocrystallites

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