Title:
垂直磁気記録ヘッドおよびその製造方法
Document Type and Number:
Japanese Patent JP5599752
Kind Code:
B2
Abstract:
A main pole layer having at least a leading taper and trimmed pole tip portion is described. The leading taper increases head field up to >=15000 Oe even for narrow track widths approaching 50 nm. For MAMR applications, a STO and trailing shield are sequentially formed on a trailing pole tip side. Furthermore, full side shields may be added to reduce fringing field. A preferred embodiment includes both of a leading taper and trailing taper at the pole tip where leading taper angle is between 20° and 60° and trailing taper angle is from 10° to 45°. A method is provided for forming various embodiments of the present invention. A key feature is that milling depth at an effective neck height distance is greater than or equal to the pole tip thickness. A self aligned STO may be formed by the same ion milling step that defines track width.
Inventors:
Ken-ichi Takano
Circumference 宇辰
李 People
Joe Smith
Circumference 宇辰
李 People
Joe Smith
Application Number:
JP2011103868A
Publication Date:
October 01, 2014
Filing Date:
May 06, 2011
Export Citation:
Assignee:
Headway Technologies In condominium lei テッド
International Classes:
G11B5/31; G11B5/02
Attorney, Agent or Firm:
3 anti-崎 Taiji
Yoichiro Fujishima
Yoichiro Fujishima