The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method

The evolution during thermal treatment of the precursor obtained by a new method to synthezise barium hexaferrite by chemical coprecipitation is described; the method involves the precipitation froma strongly alkaline ferrate(VI) solution containing barium chloride. Barium hexaferrite may be formed...

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Autores principales: Jacobo, S.E., Blesa, M.A.
Formato: JOUR
Materias:
Barium compounds
Differential thermal analysis
Heat treatment
Iron oxides
Mossbauer spectroscopy
Particle size analysis
Precipitation (chemical)
Scanning electron microscopy
Sodium compounds
Synthesis (chemical)
Thermogravimetric analysis
X ray diffraction analysis
Barium chloride
Barium hexaferrite
Chemical coprecipitation method
Ferrates
Sodium hypochlorite
Ferrites
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11554339_v7_n1_pC1_Jacobo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_11554339_v7_n1_pC1_Jacobo2023-10-03T16:08:08Z The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method Jacobo, S.E. Blesa, M.A. Barium compounds Differential thermal analysis Heat treatment Iron oxides Mossbauer spectroscopy Particle size analysis Precipitation (chemical) Scanning electron microscopy Sodium compounds Synthesis (chemical) Thermogravimetric analysis X ray diffraction analysis Barium chloride Barium hexaferrite Chemical coprecipitation method Ferrates Sodium hypochlorite Ferrites The evolution during thermal treatment of the precursor obtained by a new method to synthezise barium hexaferrite by chemical coprecipitation is described; the method involves the precipitation froma strongly alkaline ferrate(VI) solution containing barium chloride. Barium hexaferrite may be formed by heating of the original superparamagnetic precursor at temperatures as low as 700°C as shown by XRD, Mössbauer spectra and DTA-TGA behaviour. The precursor does not contain appreciable amounts of carbonate, thus favouring the formation of the hexaferrite at lower temperatures. Scanning electron microscopy shows that the ferrite particles are less than 0.5 μm in diameter. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11554339_v7_n1_pC1_Jacobo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Barium compounds
Differential thermal analysis
Heat treatment
Iron oxides
Mossbauer spectroscopy
Particle size analysis
Precipitation (chemical)
Scanning electron microscopy
Sodium compounds
Synthesis (chemical)
Thermogravimetric analysis
X ray diffraction analysis
Barium chloride
Barium hexaferrite
Chemical coprecipitation method
Ferrates
Sodium hypochlorite
Ferrites
spellingShingle Barium compounds
Differential thermal analysis
Heat treatment
Iron oxides
Mossbauer spectroscopy
Particle size analysis
Precipitation (chemical)
Scanning electron microscopy
Sodium compounds
Synthesis (chemical)
Thermogravimetric analysis
X ray diffraction analysis
Barium chloride
Barium hexaferrite
Chemical coprecipitation method
Ferrates
Sodium hypochlorite
Ferrites
Jacobo, S.E.
Blesa, M.A.
The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
topic_facet Barium compounds
Differential thermal analysis
Heat treatment
Iron oxides
Mossbauer spectroscopy
Particle size analysis
Precipitation (chemical)
Scanning electron microscopy
Sodium compounds
Synthesis (chemical)
Thermogravimetric analysis
X ray diffraction analysis
Barium chloride
Barium hexaferrite
Chemical coprecipitation method
Ferrates
Sodium hypochlorite
Ferrites
description The evolution during thermal treatment of the precursor obtained by a new method to synthezise barium hexaferrite by chemical coprecipitation is described; the method involves the precipitation froma strongly alkaline ferrate(VI) solution containing barium chloride. Barium hexaferrite may be formed by heating of the original superparamagnetic precursor at temperatures as low as 700°C as shown by XRD, Mössbauer spectra and DTA-TGA behaviour. The precursor does not contain appreciable amounts of carbonate, thus favouring the formation of the hexaferrite at lower temperatures. Scanning electron microscopy shows that the ferrite particles are less than 0.5 μm in diameter.
format JOUR
author Jacobo, S.E.
Blesa, M.A.
author_facet Jacobo, S.E.
Blesa, M.A.
author_sort Jacobo, S.E.
title The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
title_short The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
title_full The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
title_fullStr The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
title_full_unstemmed The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
title_sort thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method
url http://hdl.handle.net/20.500.12110/paper_11554339_v7_n1_pC1_Jacobo
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