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Advances in Tribology
Volume 2012, Article ID 170189, 6 pages
Research Article

Flying Instability due to Organic Compounds in Hard Disk Drive

Advanced Technology Development Department, Storage Products Design and Production Division, Toshiba Corporation, 2-5-1 Kasama, Sakae-ku, Yokohama 247-8585, Japan

Received 27 July 2012; Accepted 2 December 2012

Academic Editor: Norio Tagawa

Copyright © 2012 Koji Sonoda. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The influence of organic compounds (OCs) on the head-disk interface (HDI) was investigated in hard disk drives. The drives were tested at high temperature to investigate the influence of gaseous OC and to confirm if the gaseous OC forms droplets on head or disk. In the experiment, errors occurred by readback signal jump and we observed the droplets on the disk after full stroke seek operation of the drive. Our results indicate that the gaseous OC condensed on the slider and caused flying instability resulting in drive failure due to slider contact with a droplet of liquid OC. Furthermore, this study shows that kinetic viscosity of OC is an important factor to cause drive failure using alkane reagents.