Fabrication and Magnetic Properties of Nonmagnetic Ion Implanted Magnetic Recording Films for Bit-Patterned Media

We have investigated the magnetic M-H loop characteristics of CoCrPt-SiO 2 perpendicular recording media as influenced by nonmagnetic ion implantations. We have also developed patterned media via ion implantation using a convenient polymer nanomask approach for local control of coercivity of magneti...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 2011-10, Vol.47 (10), p.2532-2535
Main Authors: Choi, Chulmin, Noh, Kunbae, Oh, Young, Kuru, Cihan, Hong, Daehoon, Chen, Li-Han, Liou, Sy-Hwang, Seong, Tae-Yeon, Jin, Sungho
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Ion implantation
Magnetic hysteresis
Magnetic multilayers
Materials science
Media
Metals. Metallurgy
Methods of deposition of films and coatings
film growth and epitaxy
nanolithography
Other surface treatments
Other topics in materials science
Perpendicular magnetic recording
Physics
Polymers
Production techniques
Surface treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have investigated the magnetic M-H loop characteristics of CoCrPt-SiO 2 perpendicular recording media as influenced by nonmagnetic ion implantations. We have also developed patterned media via ion implantation using a convenient polymer nanomask approach for local control of coercivity of magnetically hard [Co/Pd] n multilayer film with a [Co 0.3 nm \Pd 0.8 nm] 8 /Pd 3 nm/Ta 3 nm layer structure. The CoCrPt-SiO 2 magnetic layer having perpendicular magnetic anisotropy is sputter deposited on a flat substrate. The [Co/Pd] n multilayer film with vertical magnetic anisotropy is deposited and the regions corresponding to the magnetic recording bit islands are coated with polymer islands using a nanoimprinting technique. Subsequent ion implantation allows patterned penetration of implanted ions into the [Co/Pd] n multilayer film, thus creating magnetically isolated bit island geometry while maintaining the overall flat geometry of the patterned media.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2011.2158197