公开(公告)号：US20220343942A1

公开(公告)日：2022-10-27

申请号：US17658475

申请日：2022-04-08

Applicant: SHOWA DENKO K.K.

Inventor： Yoshihito SUEOKA ,  Koji ITOKAZU ,  Noriya SEIKI ,  Michitaka TAKASAKI

IPC: G11B5/012 ,  G11B5/127

Abstract: A magnetic storage apparatus includes a disk-shaped magnetic recording medium, a motor which drives and rotates the magnetic recording medium, a magnetic head, including a first magnetic head element which reads information from the magnetic recording medium, and a second magnetic head element which writes information to the magnetic recording medium, and a bias circuit which supplies a predetermined bias voltage to the first magnetic head element. The magnetic recording medium has a laminated structure including a magnetic layer disposed above a substrate, and a carbon protective layer disposed above the magnetic layer. The bias circuit supplies to the first magnetic head element a voltage which is in a range of −0.2 V to −1.0 V with respect to a potential of the magnetic recording medium.