Composition and Structure of CobaltMolybdenumBoron Alloys Produced by Chemical Catalytic Reduction with Dimethylamine Borane

A. B. Drovosekov, M. V. Ivanov, V. M. Krutskikh, E. N. Lubnin, and Yu. M. Polukarov

Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

E-mail: Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script

Received June 26, 2007

Abstract — The co-reduction of cobalt and molybdate ions with dimethylamine borane in pyrophosphate solutions is shown to produce Co–Mo–B alloy coatings. Molybdate is reduced concurrently with cobalt to metal forming a solid solution in cobalt matrix with a hexagonal lattice. The alloy deposits have a pronounced [001] texture with the easy magnetization direction normal to the coating surface. The composition of alloys is het-erogeneous in their thickness. The alloys contain cobalt and molybdenum hydroxide admixtures, as well as intermediate products of molybdenum reduction, in the superficial layers.

PACS numbers: 75.70.-i; 81.15.-z