| 摘要 |
PURPOSE:To obtain the titled thin film magnetic head having high electromagnetic transducing efficiency and reliability by providing plural grooves to both the upper and the lower pole piece, and directing the grooves in almost the same direction as the easy magnetization axes of the pole pieces. CONSTITUTION:Rugged grooves are provided to both the upper and the lower pole piece 6 and 3 and insulating layer 2 and 4 used as the substrates. The magnetic anisotropy of a CoZr film is controlled so that the grooves may be directed in almost the same direction as the easy magnetization axis of the Co90Zr10 film constituting the lower pole piece 3. Consequently, the deterioration of magnetic permeability is remarkably controlled even in the amorphous CoZr soft magnetic material whose aged deterioration is known to be remarkable, the deterioration in the magnetic characteristics of both the upper and the lower pole piece constituting the magnetic circuit which controls considerably the electromagnetic transducing efficiency of the magnetic head is reduced, and high electromagnetic transducing efficiency and reliability can be obtained. |
