MAGNETIC DETECTION ELEMENT AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To solve the problem that coercive force and square ratio in a hard bias layer and stability in a bias magnetic field are reduced when the hard bias layer is thinned although the hard bias layer has to be thinned for obtaining sufficient reproduction sensitivity when reproduction track width becomes narrow in the conventional magnetic detection element. SOLUTION: A second hard bias layer 42 is laminated at a position apart from a multilayer film T on a thin first hard bias layer 40 by specific distance.