Inventors:
Moris Dovek - San Jose CA, US
Po-Kang Wang - San Jose CA, US
Chen-Jung Chien - Sunnyvale CA, US
Yun-Fei Li - Fremont CA, US
Assignee:
Headway Technologies, Inc. - Milpitas CA
International Classification:
G11B 5127
H04R 3100
US Classification:
2960314, 2960307, 2960309, 2960314, 3603241, 36032411, 36032412, 427127, 427128
Abstract:
In magnetic read heads based on bottom spin valves the preferred structure is for the longitudinal bias layer to be in direct contact with the free layer. Such a structure is very difficult to manufacture. The present invention overcomes this problem by using a liftoff technique to form, on the free layer, a buffer layer having a trapezoidal cross-section, sloping sidewalls, and a central area of uniform thickness, whose width defines the read track. A suitable bias layer and leads are then deposited on this buffer layer.