A dual spin-valve magnetoresistive sensor includes a free ferromagnetic layer and first and second nonmagnetic conductive spacers adjacent to opposing first and second surfaces of the free layer, respectively. A pinned ferromagnetic layer consisting of a single-film ferromagnetic layer is adjacent to...http://www.google.fr/patents/US20010030839?utm_source=gb-gplus-shareBrevet US20010030839 - Dual spin-valve magnetoresistive sensor
