Novel methods for real-time observation of molecularly thin lubricant films by ellipsometric microscopy

Author

Fukuzawa, Kenji ; Kajihara, Y. ; Liu, Quanwei ; Tarukado, T. ; Watanabe, Ryuji ; Itoh, Shintaro ; Zhang, Haijun

Author_Institution

Nagoya Univ., Nagoya, Japan

fYear

2012

fDate

Oct. 31 2012-Nov. 2 2012

Firstpage

1

Lastpage

2

Abstract

New methods for real-time observation of molecularly thin lubricant on magnetic disks are discussed. Here, two types of ellipsometric microscopes are considered. One is vertical-objective setup with off-axis Kohler illumination type and another one is two-stage imaging type. Both can provide 0.1-μm-order lateral resolution and 0.1-nmorder thickness resolution at a high image capture speed. These methods are expected to be useful for clarifying the interaction between head and disks with an extremely small gap in high density hard disk drives.

Keywords

disc drives; ellipsometry; hard discs; lubricants; magnetic heads; magnetic thin films; ellipsometric microscopy; high density hard disk drives; high image capture speed; lateral resolution; magnetic disks; magnetic head; molecularly thin lubricant films; off-axis Kohler illumination type; real-time observation; thickness resolution; two-stage imaging type; vertical-objective setup; Films; Image resolution; Lighting; Lubricants; Microscopy; Real-time systems; dewetting; ellipsometric microscope; head-disk interface; lubricant;

fLanguage

English

Publisher

ieee

Conference_Titel

APMRC, 2012 Digest

Conference_Location

Singapore

Print_ISBN

978-1-4673-4734-1

Type

conf

Filename

6407584