FMR, Magnetisation and Dynamic Coercivity Studies of Anisotropy in CoCrPtB Recording Media

Author

Thomson, T. ; Oates, C.J. ; Smith, G.M. ; Riedi, P.C.

Author_Institution

Hitachi San Jose Res. Center, San Jose

fYear

2006

fDate

8-12 May 2006

Firstpage

706

Lastpage

706

Abstract

The magnetic anisotropy of Co_100-xCr₁₄Pt₈B_x longitudinal thin film recording media sputtered onto Al/NiP substrates is determined as a function of boron concentration (x = 4at% to x = 16at%) using high field (~4.5T) ferromagnetic resonance (FMR) and the Miyajima technique. The variation of coercivity with field exposure time is also measured over two different time regimes allowing the median reversal field, in the absence of thermal activation, H₀.

Keywords

aluminium; boron alloys; chromium alloys; cobalt alloys; coercive force; ferromagnetic resonance; magnetic anisotropy; magnetic recording; magnetic thin films; nickel compounds; platinum alloys; sputter deposition; Al-NiP; Co_100-xCr₁₄Pt₈B_x; Miyajima technique; dynamic coercivity; high field ferromagnetic resonance; longitudinal thin film recording media; magnetic anisotropy; median reversal field; sputtering; Anisotropic magnetoresistance; Chromium; Coercive force; Magnetic anisotropy; Magnetic films; Magnetic recording; Magnetic resonance; Magnetization; Sputtering; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.376430

Filename

4262139