Effects of post-annealing on magnetic properties and microstructure of CoCrPt-SiO2 perpendicular magnetic recording media

Author

Park, S. ; Kim, S. ; Oh, H. ; Kim, Y. ; Hong, D. ; Lee, T.

Author_Institution

Korea Adv. Inst. of Sci. & Technol., Daejeon

fYear

2006

fDate

8-12 May 2006

Firstpage

697

Lastpage

697

Abstract

In this work, the effects of post-annealing of CoCrPt-SiO₂/Ru perpendicular magnetic recording media on magnetic properties and microstructure have been studied. CoCrPt-SiO₂/Ru/Ta thin films were deposited on Si substrate by a dc magnetron sputtering method at room temperature and followed by post-annealing for 30 minutes in the range of 100 ~ 240degC. Magnetic properties such as magnetization, coercivity (Hc) and negative nucleation field (Hn) were measured by a vibrating sample magnetometer. Magnetic anisotropic constant (Ku) of the films was measured by a torque magnetometer. Microstructural and chemical changes were studied.

Keywords

annealing; chromium alloys; cobalt alloys; coercive force; crystal microstructure; magnetic anisotropy; magnetic thin films; magnetisation; nucleation; perpendicular magnetic recording; platinum alloys; ruthenium; silicon alloys; sputter deposition; tantalum; thin films; CoCrPt-SiO₂; Si; coercivity; magnetic anisotropic constant; magnetic properties; magnetization; magnetron sputtering; microstructure; negative nucleation field; perpendicular magnetic recording media; post-annealing; silicon substrate; temperature 100 degC to 240 degC; temperature 293 K to 298 K; thin films; time 30 min; torque magnetometer; vibrating sample magnetometer; Magnetic anisotropy; Magnetic field measurement; Magnetic properties; Magnetometers; Microstructure; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Semiconductor thin films; Sputtering; Temperature distribution;

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.2006.376421

Filename

4262130