A magnetic head characteristic measuring device for determining the recording and reproduction efficiencies of a magnetic head, which uses an MR block consisting of plural parallel magnetoresistive elements disposed on opposite sides of a reference plane aligned with the center of the gap of the magnetic...http://www.google.fr/patents/US4853633?utm_source=gb-gplus-shareBrevet US4853633 - Magnetic head electromagnetic conversion efficiency measuring method and element therefor
Magnetic head electromagnetic conversion efficiency measuring method and ...