This inventor holds 2 USPTO granted patents. Top assignee: National Institute for Materials Science. Active years: 2016.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ibaraki, JP (2016)
- Tsukuba, JP (2016)
Company Filing History:
Years Active: 2016
Title: Masamitsu Hayashi: Innovator in Spintronics
Introduction
Masamitsu Hayashi is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced magnetic materials and spintronics devices. With a total of 2 patents, his work is recognized for its innovative approaches and practical applications.
Latest Patents
Hayashi's latest patents include a "Perpendicularly magnetized ultrathin film exhibiting high perpendicular magnetic anisotropy, method for manufacturing same, and application." This invention provides an element structure where a magnetic layer possesses a high magnetic anisotropy constant and saturated magnetization properties in a thickness of 1.5 nm or less. The invention details a BCC metal nitride/CoFeB/MgO film structure that utilizes a nitride of a BCC metal as a seed layer. The nitride amount in the BCC metal nitride is preferably less than 60% in terms of volume ratio based on 100% BCC metal. This innovation allows for the creation of a perpendicularly magnetized film with exceptional magnetic properties, achieving a perpendicular magnetic anisotropy of 0.1×10 erg/cm or more and a saturated magnetization of 200 emu/cm or more, even when the thickness of the magnetic layer is between 0.3 nm and 1.5 nm.
Another notable patent focuses on the development of a CoFe-based Heusler alloy aimed at realizing high-performance spintronics devices. This invention provides a CoFe(GaGe) Heusler alloy that exhibits a spin polarization larger than 0.65, with a Curie temperature as high as 1288K. The resulting CPP-GMR device utilizing this alloy as an electrode demonstrates the world's highest MR ratio, while an STO device shows high output, and an NLSV device exhibits a significant spin signal.
Career Highlights
Masamitsu Hayashi is affiliated with the National Institute for Materials Science, where he conducts research and development in advanced materials. His work has been instrumental in pushing the boundaries of spintronics technology, contributing to the advancement of electronic devices that leverage spin properties for improved performance.
Collaborations
Hayashi has collaborated with notable colleagues, including Yukiko Takahashi and Takao Furubayashi
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile