Company Filing History:
2 out of 698 
1 out of 832,812 Years Active: 1986-1987
Title: Yoshifumi Sakurai: Innovator in Perpendicular Magnetization Films
Introduction
Yoshifumi Sakurai is a notable inventor based in Mino, Japan. He has made significant contributions to the field of magnetization films, holding a total of 2 patents. His work focuses on the development of thin films with unique magnetic properties, which have potential applications in various technologies.
Latest Patents
Sakurai's latest patents include innovations in perpendicular magnetization films. The first patent describes a perpendicular magnetization amorphous thin film made from an alloy of samarium, cobalt, and bismuth. This film features an easy magnetizing axis that is perpendicular to the substrate plane, allowing for a large saturation magnetization along this direction. The preparation method involves depositing the alloy on the substrate without applying a bias voltage.
The second patent details a perpendicular magnetization film composed of an iron-chromium alloy. This film also has an easy magnetization axis perpendicular to the substrate plane. It exhibits a dominant peak in the X-ray diffraction spectrum corresponding to a lattice constant of 2.07 to 2.08 Å and possesses a saturation magnetization exceeding 100 emu/cm³. The preparation of this thin film can be achieved by depositing iron and chromium under vacuum or in an argon atmosphere at low pressure.
Career Highlights
Throughout his career, Yoshifumi Sakurai has worked with various companies, including Kanegafuchi Kagaku Kogyo Kabushiki Kaisha. His expertise in magnetization films has positioned him as a key figure in this specialized field.
Collaborations
Sakurai has collaborated with notable colleagues such as Koji Saiki and Takuhisa Numata. Their combined efforts have contributed to advancements in the technology surrounding magnetization films.
Conclusion
Yoshifumi Sakurai's innovative work in the development of perpendicular magnetization films showcases his significant contributions to the field of materials science. His patents reflect a deep understanding of magnetic properties and their applications, marking him as an influential inventor in this domain.