The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2022
Filed:
Feb. 17, 2021
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Masayuki Takagishi, Kunitachi, JP;
Naoyuki Narita, Funabashi, JP;
Tomoyuki Maeda, Kawasaki, JP;
Tazumi Nagasawa, Yokohama, JP;
Hitoshi Iwasaki, Nerima, JP;
Hirofumi Suto, Ota, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo, JP;
Abstract
According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a third magnetic layer provided between the second magnetic layer and the second magnetic pole, a first nonmagnetic layer provided between the first and second magnetic layers, a second nonmagnetic layer provided between the second and third magnetic layers, and a third nonmagnetic layer provided between the first magnetic pole and the first magnetic layer. A first magnetic pole length of the first magnetic pole is less than a second magnetic pole length of the second magnetic pole. A first magnetic layer length of the first magnetic layer is greater than a second magnetic layer length of the second magnetic layer.