Effects of nitrogenated NiP seedlayer on Co-alloy thin film media

The magnetic properties of Cr/CoPt and Cr/CoCrPt thin films prepared by ion beam deposition with Xe ions (0.6–1.5 kV) have been investigated. The effect of ion beam energy on the structural and magnetic properties has been studied. A strong dependence of in-plane coercivity on the beam energy was observed and the coercivity increased with beam energy for both CoPt and CoCrPt thin films. With increasing beam energy from 600 to 1500 eV, the coercivity for CoPt thin films increased from 1700 to 2100 Oe. In addition, CoPt thin films have a greater advantage over CoCrPt thin films. A 40% increase in coercivity for CoPt thin films was obtained at the same remanent magnetization-thickness (Mrt) product as compared to CoCrPt. A minimum thickness of 20 Å for the Cr underlayer and 600 eV beam energy were required for constant coercivity and Mrt. X-ray diffraction studies indicated that CoPt(101̄0) texture and in-plane hcp c-axis orientation were enhanced with increased beam energy. The increase of coercivity with beam energy is attributed to an increase in the peak intensity ratio (101̄0)/(0002). The decrease of grain size for CoPt(101̄0) texture with beam energy was attributed to contribute to improvement in coercivity. Compositional analysis using inductively coupled plasma indicated that the Pt content in CoPt thin films increased with beam energy. The increase of Pt content in the thin films accompanied by an increase in the d spacing (lattice constant) improved in-plane coercivity. From magnetic force microscopy studies, lower inter-granular exchange coupling was observed at higher beam energy.

show abstract

Effect of ion beam energy on magnetic properties of CoCrPt and CoPt thin films

Zhang

Wang

Alex

et al. 2004

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Effects of nitrogenated NiP seedlayer on Co-alloy thin film media

Cited by 1 publication

References 5 publications

Effect of ion beam energy on magnetic properties of CoCrPt and CoPt thin films

Effect of ion beam energy on magnetic properties of CoCrPt and CoPt thin films

Contact Info

Product

Resources

About