Magnetic field sensor based on a maghemite/polyaniline hybrid material

A hybrid material containing maghemite and polyaniline (PAni) doped with dodecylbenzenesulfonic acid (DBSA) was prepared through in situ polymerization in aqueous medium. The pure maghemite powder presented average particle diameter of 10 nm and magnetization force of 14 mN. The obtained maghemite/P...

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Published in:Journal of materials science 2010-09, Vol.45 (18), p.5012-5021
Main Authors: de Souza, Fernando Gomes, Marins, Jéssica Alves, Pinto, José Carlos, de Oliveira, Geiza Esperandio, Rodrigues, Cezar Manzini, Lima, Luis Mauricio T. R.
Format: Article
Language:English
Subjects:
Aqueous solutions
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Electrical conductivity
Electrical resistivity
Icam 2009
Iron oxides
Magnetic fields
Magnetism
Magnetization
Materials Science
Particle size
Polyanilines
Polymer Sciences
Polymerization
Powders
Resistivity
Sensors
Sodium dodecylbenzenesulfonate
Solid Mechanics
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cited_by cdi_FETCH-LOGICAL-c421t-239da3d9e324bd68af64c3e0dcc3f5e879f2cf953753c5d4c06aff92a6db237e3
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container_issue 18
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container_title Journal of materials science
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creator de Souza, Fernando Gomes
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Lima, Luis Mauricio T. R.
description A hybrid material containing maghemite and polyaniline (PAni) doped with dodecylbenzenesulfonic acid (DBSA) was prepared through in situ polymerization in aqueous medium. The pure maghemite powder presented average particle diameter of 10 nm and magnetization force of 14 mN. The obtained maghemite/PAni hybrid material also presented nanometric dimensions, associated with reasonable electrical conductivity (260 times larger than the electrical conductivity of the pure maghemite) and about 60% of the original magnetic force. Additionally, the electrical conductivity of the hybrid powder showed significant sensitivity to changes of the magnetic field, indicating that these materials can be useful as magnetic field sensors.
doi_str_mv 10.1007/s10853-010-4321-y
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subjects Aqueous solutions
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Electrical conductivity
Electrical resistivity
Icam 2009
Iron oxides
Magnetic fields
Magnetism
Magnetization
Materials Science
Particle size
Polyanilines
Polymer Sciences
Polymerization
Powders
Resistivity
Sensors
Sodium dodecylbenzenesulfonate
Solid Mechanics
title Magnetic field sensor based on a maghemite/polyaniline hybrid material
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