Scanning Electron Beam Desorption Technique for Study of Magne Recording Disk Lubricants
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Perfluorinated ethers (PFE) are used as lubricants on the sur- faces of magnetic recording disks. Failure to quantify the lubricant distribution on the disk surface has prevented a full understanding of head/disk interactions. Such quantification is possible by use of scanning electron stimulated desorption (SESD). The desorption properties of PFE under e-beam bombardment can determine lubricant distribution at the micron/submicron range. Desorbed ionic fractions from the lubricant are detected by a secondary ion mass spectromemter (SIMS). The advantages in using SESD with SIMS detection are that e-beams can be focused down to submicron beam sizes to give high resolution, and SIMS detectors have high sensitivity and fast response to low levels of ionic species.