Microstructure Control of $L1_{0}$ Ordered FePt Granular Film for HAMR Application

Author

Hu, Jiang Feng ; Zhou, Tie Jun ; Phyoe, W.L. ; Cher, Kelvin ; Shi, Jian Zhong

Author_Institution

Data Storage Inst., Agency for Sci., Technol. & Res. (A*STAR), Singapore, Singapore

Volume

49

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

3737

Lastpage

3740

Abstract

The FePt-C granular films for HAMR application have been developed by using the in-line sputter system. The microstructure development of the FePt-C granular films with different C contents was investigated. It was found that both the grain shape and the grain aspect ratio varied with increasing C content. The desired microstructure of FePt based granular film with well-isolated columnar grains was obtained for FePt granular film with 60 vol.% C doping. The mean grain size is nm and the grain aspect ratio is larger than 1. The developed FePt-C granular film with well-isolated FePt grains has the potential to be used as the recording media for HAMR application.

Keywords

grain size; iron alloys; metallic thin films; platinum alloys; sputter deposition; FePt; HAMR Application; grain size; granular films; in-line sputter system; microstructural properties; well-isolated columnar grains; Doping; Grain size; Heat-assisted magnetic recording; Heating; Media; Microstructure; Shape; $L1_{0}$ ordered FePt; Grain isolation; heat assisted magnetic recording (HAMR); microstructure control;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2244069

Filename

6559045

Microstructure Control of Ordered FePt Granular Film for HAMR Application

Hu, Jiang Feng ; Zhou, Tie Jun ; Phyoe, W.L. ; Cher, Kelvin ; Shi, Jian Zhong

jour

Microstructure Control of $L1_{0}$ Ordered FePt Granular Film for HAMR Application