Contact Stress-Induced Micromagnetic Behavior in Magnetic Recording Disk

摘要: Stress plays an important role in the magnetic properties of ferromagnetic materials. Sliding contact hard disk drives can lead to tribological failures terms data loss and demagnetization. However, relationship between stress-induced magnetization changes recording is rarely discussed. In this study, micromagnetic behavior was investigated using simulation. A model including magnetostriction effect into Landau–Lifshitz–Gilbert equation developed simulate stress on changes. Then finite element analysis used calculate critical stresses for occurrence demagnetization perpendicular under sliding according our previous experimental results. Based these simulation results, it found that moment decreased by 8.9 % loss, rotated 55.7° addition, simulated static domain structures when occur were agreement with previously reported Finally, illustrated. It proposed caused reduction, while rotation.