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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Detalles Bibliográficos
Publicado: 1997
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:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v7_n1_pC1_Jacobo
http://hdl.handle.net/20.500.12110/paper_11554339_v7_n1_pC1_Jacobo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11554339_v7_n1_pC1_Jacobo
record_format dspace
spelling paper:paper_11554339_v7_n1_pC1_Jacobo2023-06-08T16:09:20Z The thermal evolution of a barium ferrite precursor obtained by a new chemical coprecipitation method 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. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v7_n1_pC1_Jacobo 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
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.
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
publishDate 1997
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v7_n1_pC1_Jacobo
http://hdl.handle.net/20.500.12110/paper_11554339_v7_n1_pC1_Jacobo
_version_ 1768545156503437312

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