[en] We report the electrodeposition of Cu and Ni in aqueous solutions together with the deposition of lanthanides (Gd, Sm, Dy, Tb) and amorphous magnetic alloys of lanthanides with transition metals (Fe, Co) onto various polymer cathodes in formamide solutions. We used conducting polymers (polypyrrole, PPy; polyethylenedioxythiophene, PEDOT) sprayed on different substrates and in addition composite materials based on carbon black (CB) mixed either with polyethylene (PE) or with polycarbonate (PC). In the latter case, the conducting material is easily shaped out in various forms. When deposited on some of these substrates, the alloys appear as an interesting material for magneto-optic recording. The electrochemical process was used for the preparation of Gd/Co and Dy/Fe alloys for which the measured coercitive fields ranged from 250–300 Oe (Dy/Fe) to about 350 Oe (Gd/Fe). We demonstrated also the feasibility of an additional electrografting of a transparent protective layer of polyacrylonitrile (PAN) in order to avoid the corrosion of the alloys by the atmosphere.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Martinot, Lucien ; Université de Liège - ULiège > Department of Chemistry > Radiochemistry Laboratory
Leroy, Delphine ; Université de Liège - ULiège > Department of Chemistry > Radiochemistry Laboratory
Zhan, H.; Université de Liège - ULiège > Department of Chemistry > Radiochemistry Laboratory
Licour, C.; Université de Liège - ULiège > Department of Chemistry > Radiochemistry Laboratory
Jérôme, Christine ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Chapelle, Gérard; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Calberg, Cédric ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
The use of conducting polymers as cathodes for the electrochemical deposition of magnetic transition metal/rare alloys
IISN - Institut interuniversitaire des sciences nucléaires BELSPO - Politique scientifique fédérale FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture
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