Abstract
Microwave-assisted magnetic recording (MAMR) has recently emerged as a candidate to solve the trilemma in magnetic recording. In MAMR the magnetizations of recording medium can be switched with much lower magnetic field by magnetic resonance, which requires a higher frequency oscillator than 20GHz. In this study, it is described that Spin-torque Oscillator (STO) using a material with a large negative anisotropy has a possibility to generate higher frequency and stable magnetic field and it is preferable to a conventional oscillator with soft magnetic materials.
