Kenta Hamamoto

Title: Kenta Hamamoto: Innovator in Magnetoresistive Technology

Introduction

Kenta Hamamoto is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetoresistive technology, holding three patents that showcase his innovative approach to enhancing magnetic disk devices.

Latest Patents

Hamamoto's latest patents include the CPP-type magnetoresistance effect element and magnetic disk device. This invention features a magnetoresistive effect element designed to prevent the deterioration of recording media by effectively inhibiting erroneous writing. The structure includes a magnetoresistive effect part, along with upper and lower shield layers that sandwich the effect part. The design employs a current perpendicular to plane (CPP) structure, allowing a sense current to be applied in the lamination direction. Additionally, the magnetoresistive effect part consists of a nonmagnetic intermediate layer, flanked by first and second ferromagnetic layers. The upper and lower shield layers have inclined magnetization structures, ensuring that their magnetizations are mutually orthogonal.

Another notable patent is the CPP-type magnetoresistance effect element and magnetic disk device using side shield layers. This MR element incorporates side shield layers that interpose the MR part between them in the track width direction. The MR part also includes a nonmagnetic intermediate layer and first and second ferromagnetic layers. Each of the upper and lower shield layers features an inclined magnetization structure, and the side shield layers are magnetically coupled with the upper shield layer. This design allows the side shield layer to apply a bias magnetic field to the first ferromagnetic layer, ensuring that the magnetizations of the first and second ferromagnetic layers remain substantially orthogonal.

Career Highlights

Kenta Hamamoto is currently employed at TDK Corporation, where he continues to develop innovative technologies in the field of magnetoresistive devices. His work has significantly advanced the capabilities of magnetic storage solutions.

Collaborations

Throughout his career, Hamamoto has collaborated with notable colleagues, including Naomichi Degawa and Takahiko Machita. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Kenta Hamamoto's contributions to magnetoresistive technology have established him as a key figure in the field. His innovative patents reflect a commitment to advancing magnetic disk devices, ensuring their reliability and efficiency.