... June 2000 mechanical contact tribology giant magnetoresistance lubrication magnetic disc storage hard discs thermal expansion atomic force microscopy The ever-increasing demand of high areal density has lead to a continuous reduction in the magnetic spacing between the head...

...Larry Y. Wang; Mike Sullivan; Jim Chao Thermal asperities (TA’s) are tribological events that cause repercussions for giant magnetoresistance (GMR) and MR heads in the hard disk drive industry. A TA is a read signal spike caused by sensor temperature rise due to contact with disk asperities...