Optical property study of FePt-C nanocomposite thin film for heat-assisted magnetic recording

被引：16

作者：

Cen, Z. H. ^{[1
]}

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

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

Li, J. M. ^{[1
]}

Cher, K. M. ^{[1
]}

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

Ye, K. D. ^{[1
]}

Zhang, J. ^{[1
]}

机构：

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

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 08期

关键词：

SPECTROSCOPIC ELLIPSOMETRY; TRANSMISSION; COERCIVITY; SIZE;

D O I：

10.1364/OE.21.009906

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical properties of the FePt-C nanocomposite thin film that was synthesized by sputtering with MgO/NiTa underlayer on glass substrate have been determined by an approach combining spectroscopic ellipsometry and transmission over the wavelength range of 380 - 1700 nm. It was observed that the refractive index is larger than the extinction coefficient, indicating that free electron absorption is not the dominant optical transition in the FePt-C thin film. Compared with FePt thin film, the FePt-C thin film has smaller optical constants, which lead to better optical performance including smaller optical spot on recording media and higher transducer efficiency for heat assisted magnetic recording. (c) 2013 Optical Society of America

引用

收藏

页码：9906 / 9914

页数：9

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