Magnetic imaging reference sample

Author

Rice, Paul ; Russek, Stephen E. ; Haines, Bill

Author_Institution

Nat. Inst. of Stand. & Technol., Boulder, CO, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4133

Lastpage

4137

Abstract

We propose a reference sample for magnetic imaging. We have chosen a thin-film magnetic hard disk as a representative sample because the domains are very stable magnetically and thermally. This type of sample is also of fundamental interest to the disk drive industry, currently the largest user of magnetic force microscopy. Disk samples are prepared by writing a special magnetic pattern consisting of various transition spacings designed to explore certain aspects of magnetic imaging. Disks are then cut into coupons, cleaned and patterned with a reference grid of numbered 20 μ×20 μm Au frames. These frames allow easy navigation around the sample. We believe a sample of this type can help define limits, expectations and claims of resolution, as well as instrument sensitivity and ease of operation

Keywords

atomic force microscopy; hard discs; image resolution; magnetic domain walls; magnetic film stores; magnetic force microscopy; magnetic recording noise; magnetisation; measurement standards; specimen preparation; 20 mum; AFM image; Au; coupons; disk drive industry; domain wall motion; instrument sensitivity; magnetic force microscopy; magnetic imaging reference sample; magnetic pattern writing; magnetically stable domains; magnetization pinning; media noise; numbered Au frames; patterning; reference grid; resolution limits; thermally stable domains; thin-film magnetic hard disk; transition spacings; Disk drives; Gold; Hard disks; Instruments; Magnetic domains; Magnetic films; Magnetic force microscopy; Magnetic forces; Navigation; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539318

Filename

539318