Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess

Co-Ti-Sn-Ge substituted M-type bariumhexaferrite powders with mean grain sizes between about 10 nm and about 1 ¿m and a narrow size distribution were prepared reproducibly by means of a modified glass crystallization method. At annealing temperatures between 560 and 580°C of the amorphous flakes nan...

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Autores: Gornert, P., Pfeiffer, H., Sinn, E., Muller, Rainer, Schuppel, W., Rosler, M., Batlle Gelabert, Xavier, García del Muro y Solans, Montserrat, Tejada Palacios, Javier, Galí Medina, Salvador, 1949-
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1994
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/8582
Acceso en línea:https://hdl.handle.net/2445/8582
Access Level:acceso abierto
Palabra clave:Materials nanoestructurats
Propietats magnètiques
Materials magnètics
Anisotropia
Substàncies amorfes
Nanostructured materials
Magnetic properties
Magnetic materials
Anisotropy
Amorphous substances
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spelling Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiessGornert, P.Pfeiffer, H.Sinn, E.Muller, RainerSchuppel, W.Rosler, M.Batlle Gelabert, XavierGarcía del Muro y Solans, MontserratTejada Palacios, JavierGalí Medina, Salvador, 1949-Materials nanoestructuratsPropietats magnètiquesMaterials magnèticsAnisotropiaSubstàncies amorfesNanostructured materialsMagnetic propertiesMagnetic materialsAnisotropyAmorphous substancesCo-Ti-Sn-Ge substituted M-type bariumhexaferrite powders with mean grain sizes between about 10 nm and about 1 ¿m and a narrow size distribution were prepared reproducibly by means of a modified glass crystallization method. At annealing temperatures between 560 and 580°C of the amorphous flakes nanocrystalline particles grow. They behave superparamagnetically at room temperature and change into stable magnetic single domains at lower temperatures. The magnetic volume of the powders is considerably less than the geometric one. However, the effective anisotropy fields are larger by a Factor of two to three.IEEE1994info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/8582Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a http://dx.doi.org/10.1109/20.312385IEEE Transactions on Magnetics, 1994, vol. 30, núm. 2 (Part 1-2), p. 714-716.http://dx.doi.org/10.1109/20.312385(c) IEEE, 1994info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/85822026-05-27T06:46:51Z
dc.title.none.fl_str_mv Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
title Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
spellingShingle Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
Gornert, P.
Materials nanoestructurats
Propietats magnètiques
Materials magnètics
Anisotropia
Substàncies amorfes
Nanostructured materials
Magnetic properties
Magnetic materials
Anisotropy
Amorphous substances
title_short Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
title_full Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
title_fullStr Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
title_full_unstemmed Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
title_sort Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess
dc.creator.none.fl_str_mv Gornert, P.
Pfeiffer, H.
Sinn, E.
Muller, Rainer
Schuppel, W.
Rosler, M.
Batlle Gelabert, Xavier
García del Muro y Solans, Montserrat
Tejada Palacios, Javier
Galí Medina, Salvador, 1949-
author Gornert, P.
author_facet Gornert, P.
Pfeiffer, H.
Sinn, E.
Muller, Rainer
Schuppel, W.
Rosler, M.
Batlle Gelabert, Xavier
García del Muro y Solans, Montserrat
Tejada Palacios, Javier
Galí Medina, Salvador, 1949-
author_role author
author2 Pfeiffer, H.
Sinn, E.
Muller, Rainer
Schuppel, W.
Rosler, M.
Batlle Gelabert, Xavier
García del Muro y Solans, Montserrat
Tejada Palacios, Javier
Galí Medina, Salvador, 1949-
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Materials nanoestructurats
Propietats magnètiques
Materials magnètics
Anisotropia
Substàncies amorfes
Nanostructured materials
Magnetic properties
Magnetic materials
Anisotropy
Amorphous substances
topic Materials nanoestructurats
Propietats magnètiques
Materials magnètics
Anisotropia
Substàncies amorfes
Nanostructured materials
Magnetic properties
Magnetic materials
Anisotropy
Amorphous substances
description Co-Ti-Sn-Ge substituted M-type bariumhexaferrite powders with mean grain sizes between about 10 nm and about 1 ¿m and a narrow size distribution were prepared reproducibly by means of a modified glass crystallization method. At annealing temperatures between 560 and 580°C of the amorphous flakes nanocrystalline particles grow. They behave superparamagnetically at room temperature and change into stable magnetic single domains at lower temperatures. The magnetic volume of the powders is considerably less than the geometric one. However, the effective anisotropy fields are larger by a Factor of two to three.
publishDate 1994
dc.date.none.fl_str_mv 1994
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/8582
url https://hdl.handle.net/2445/8582
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a http://dx.doi.org/10.1109/20.312385
IEEE Transactions on Magnetics, 1994, vol. 30, núm. 2 (Part 1-2), p. 714-716.
http://dx.doi.org/10.1109/20.312385
dc.rights.none.fl_str_mv (c) IEEE, 1994
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) IEEE, 1994
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869418735461203968
score 15,300724

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