Numerical Analysis Methods for High Frequency Magnetic Recording

Abstract

"High Density Recording" has been a main stream in magnetic recording. Another recent stream is "High Frequency Recording". It is not enough to analyze only magnetic fields in high frequencies above 500MHz. Electromagnetic field analyses considering the capacitances among conductors and between lines are required. We will report the basic principles and application examples of numerical analysis methods such as FEM, finite element method, and FDTD, finite difference time domain, to high frequency magnetic recording heads.