Correlation between microhardness and coercivity of electrodeposited cobalt platinum films

Abstract

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 (H_c,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 language	English
Title of host publication	Magnetic Materials, Processes, and Devices VIII - Proceedings of the International Symposium
Pages	274-283
Number of pages	10
Volume	PV 2004-23
Publication status	Published - 2006
Externally published	Yes
Event	206th ECS Meeting - Honolulu, HI, United States Duration: 5 Oct 2004 → 8 Oct 2004

Conference

Conference	206th ECS Meeting
Country	United States
City	Honolulu, HI
Period	5.10.04 → 8.10.04

ASJC Scopus subject areas

Engineering(all)

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Correlation between microhardness and coercivity of electrodeposited cobalt platinum films. / Franz, S.; Balzarini, G.; Bestetti, M.; Vicenzo, A.; Cavallotti, P. L.

Magnetic Materials, Processes, and Devices VIII - Proceedings of the International Symposium. Vol. PV 2004-23 2006. p. 274-283.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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title = "Correlation between microhardness and coercivity of electrodeposited cobalt platinum films",

abstract = "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.",

author = "S. Franz and G. Balzarini and M. Bestetti and A. Vicenzo and Cavallotti, {P. L.}",

year = "2006",

language = "English",

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volume = "PV 2004-23",

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note = "206th ECS Meeting ; Conference date: 05-10-2004 Through 08-10-2004",

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T1 - Correlation between microhardness and coercivity of electrodeposited cobalt platinum films

AU - Franz, S.

AU - Balzarini, G.

AU - Bestetti, M.

AU - Vicenzo, A.

AU - Cavallotti, P. L.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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