US 7,403,358 B2
Thin film magnetic head, magnetic head device, magnetic recording/reproducing device and method for fabricating a thin film magnetic head
Koichi Terunuma, Chuo-ku (Japan); Koji Shimazawa, Chuo-ku (Japan); and Akifumi Kamijima, Chuo-ku (Japan)
Assigned to TDK Corporation, Tokyo (Japan)
Filed on Sep. 16, 2005, as Appl. No. 11/227,126.
Application 11/227126 is a division of application No. 10/191484, filed on Jul. 10, 2002, abandoned.
Claims priority of application No. 2001-222731 (JP), filed on Jul. 24, 2001.
Prior Publication US 2006/0007604 A1, Jan. 12, 2006
Int. Cl. G11B 5/39 (2006.01); G11B 5/127 (2006.01)
U.S. Cl. 360—322 5 Claims
OG exemplary drawing
 
1. A thin film magnetic head comprising a reading element including a magnetoresistive effective film to respond commensurate with an external magnetic field, a pair of magnetic domain-controlling films arranged at both edge sides of said magnetoresistive effective film to apply a perpendicular biasing magnetic field to said magnetoresistive effective film and a pair of electrode films, each composed of a first electrode film and a second electrode film,
a forefront of said first electrode film being overlaid on said magnetoresistive effective film,
a forefront surface of said first electrode film being risen at an inner angle of θ1,
said first electrode film being formed on both said magnetoresistive effective film and said magnetic domain-controlling film,
said second electrode film being formed on said first electrode film,
a forefront surface of said second electrode film extending in a kinked line shape from an end position of said forefront surface of said first electrode film and being risen at an inner angle θ2 smaller than said inner angle θ1, wherein said reading element further includes a conductive hard film, which is made of at least one selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Ru, Rh, Ir. Pd, Cu, Si, and Al and extends from only said forefront of said second electrode film without extending from said forefront of said first electrode film so as to cover an entire surface of said second electrode film.