Correlation between microhardness and coercivity of electrodeposited cobalt platinum films

S. Franz, G. Balzarini, M. Bestetti, A. Vicenzo, P. L. Cavallotti

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Recently, great interest has been raised on cobalt platinum alloys due to their possible application in perpendicular magnetic recording. Electrodeposited cobalt platinum alloys with hcp structure, [001] preferred orientation and Pt content of about 20 at.% were considered and their magnetic, compositional and microstructural properties were correlated. Lattice parameter c of electrodeposited CoPt alloys from glycine-citrate bath showed a sigmoidal dependence on Pt content. Moreover, a linear correlation between coercivity measured in the direction perpendicular to the substrate (Hc,perp) and microstructural properties, i.e. Vickers microhardness (HV) and Young modulus (Y), was observed. In the microhardness range 550 to 900 MPa, H c,Perp of electrodeposited films increased from about 3000 Oe to 3500 Oe. Correspondingly, the Young modulus increased from 125 to 225 GPa.

Original languageEnglish
Title of host publicationMagnetic Materials, Processes, and Devices VIII - Proceedings of the International Symposium
Number of pages10
VolumePV 2004-23
Publication statusPublished - 2006
Externally publishedYes
Event206th ECS Meeting - Honolulu, HI, United States
Duration: 5 Oct 20048 Oct 2004


Conference206th ECS Meeting
CountryUnited States
CityHonolulu, HI

ASJC Scopus subject areas

  • Engineering(all)

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