Near field optical transducer design with FePt recording media for multiple Tb/in2 density heat assisted magnetic recording

被引：0

作者：

Xu, B. X. ^{[1
]}

Toh, Y. T. ^{[1
]}

Chia, C. W. ^{[1
]}

Hu, J. F. ^{[1
]}

Vienne, G. G. ^{[1
]}

An, C. W. ^{[1
]}

Yosia, Y. ^{[1
]}

Chong, T. C. ^{[1
]}

机构：

[1] ASTAR, Data Storage Inst, Singapore 117608, Singapore

来源：

OPTICAL DATA STORAGE 2010 | 2010年 / 7730卷

关键词：

Heat assisted magnetic recording; near field optics; surface plasmon; nano-photonics; magnetic recording; FePt;

D O I：

10.1117/12.859097

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In heat assisted magnetic recording, near field optical transducer is a key component for its success. Due to the near field properties, the transducer design has to be done combining with media. FePt is a potential recording material for heat assisted recording. In this paper, the measured optical constant of FePt thin film was introduced, and the design and simulation of c-aperture transducer with FePt media for multiple Tb/in(2) heat assisted magnetic recording application were performed. The light spot sizes of around 15nm with high efficiency were obtained. Optical transducer is used to heat the media locally. Its final target is to generate smaller thermal profile to meet the requirement of recording density. Therefore, using obtained beam spot as heat source, thermal simulations were carried out with media material's thermal parameters. The simulation results show that recording density of 3Tb/in(2) is possible.

引用

页数：6

共 9 条

[1]

endur Kursat, 2006, APPL PHYS LETT, V88

[2] Ridge waveguide as a near-field optical source [J].