Playback performance of perpendicular magnetic recording tape media for over-50-TB cartridge by facing targets sputtering method

► Perpendicular magnetic recording tape medium was formed by the facing targets sputtering method. ► Laminated soft magnetic underlayers reduced low-frequency media noise. ► The tape showed high SNR values with sharp transitions in playback tests by a drum tester. ► An areal density of 45.0 Gb/in.2 was confirmed by a high-resolution contact tester.