SPIN-VALVE ELEMENT AND ITS MANUFACTURING METHOD

摘要

A spin valve element is obtained in which, in order to achieve impedance matching of a spin valve element which undergoes high-frequency oscillation, parallel or series magnetic element groups, including a plurality of magnetic elements in which an intermediate layer of an insulating member or a nonmagnetic member is sandwiched by a pair of ferromagnetic layers, are further connected either in series or in parallel, and by using magnetic element groups connected in combination either in parallel or in series, the impedance of the spin valve element can be matched to a desired value, and moreover a porous film can be used to fabricate a spin valve element, so that sophisticated lithography methods need not be used, and a single-domain structure can be realized for individual magnetic elements.