Understanding and mitigation of scratch induced magnetic damage in perpendicular recording media

Author

Zhu, S. ; Huang, J. ; Li, X. ; Lu, X.B. ; Liu, H.

Author_Institution

Seagate Technol., Recording Media Res. Center, Fremont, CA, USA

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

Hard disk drives (HDDs) are among the most widely used information storage components in these digital times, since they were commercialized in late 1970s. The perpendicular magnetic recording (PMR) media using (CoCrPt)_x(Metal Oxide)_1-x magnetic alloys have reached an areal density of 700GB/in2 and beyond[1]. The current researches focus on achieving higher grain refinement and increasing uniaxial magnetocrystalline anisotropy and so on [2] to improve signal-to-noise ratio. Mechanical reliability is also one of key important properties to be considered for the recording media design [3].

Keywords

chromium alloys; cobalt alloys; grain refinement; perpendicular magnetic recording; platinum alloys; (CoCrPt)_x; (CoCrPt)_x magnetic alloys; HDD; areal density; grain refinement; hard disk drives; information storage components; mechanical reliability; perpendicular magnetic recording media; scratch induced magnetic damage; signal-noise ratio; uniaxial magnetocrystalline anisotropy; Magnetic resonance imaging; Magnetomechanical effects; Media; Perpendicular magnetic recording; Strain; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157662

Filename

7157662