Model Analysis of Magnetic Write Head for Shingled Thermally Assisted Magnetic Recording

Author

Kanai, Yasukazu ; Tamura, H. ; Yamakawa, Kiyoshi ; Yoshida, Kenta ; Greaves, Simon John ; Muraoka, Hiroaki

Author_Institution

Dept. of Inf. & Electron. Eng., Niigata Inst. of Technol., Kashiwazaki, Japan

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

Magnetic write heads were modeled and analyzed for thermally assisted magnetic recording combined with shingled recording, targeting an areal density of 8 Tbit/in² and using the Storage Research Consortium (SRC, Japan) specifications. The head design has an indentation for the near field transducer and has a large recording field at the heat spot. Micromagnetic media recording simulations revealed that an areal density of more than 8 Tbit/in² was possible with shingled recording, compared with 4.4 Tbit/in² in a nonshingled system. Also, micromagnetic recording head simulations showed that reducing the magnetic head dimensions was effective for high frequency response. Finally, it is shown that a soft magnetic underlayer works quite well at high frequency to enhance the recording field.

Keywords

indentation; magnetic heads; micromagnetics; thermomagnetic recording; head design; indentation; magnetic write head; micromagnetic media recording simulations; near field transducer; shingled thermally assisted magnetic recording; Heating; Magnetic heads; Magnetic recording; Media; Micromagnetics; Signal to noise ratio; Soft magnetic materials; Magnetic write heads; micromagnetic simulations; shingled recording; thermally assisted magnetic recording (TAMR);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2325865

Filename

6971752