A Vertical Giant Magnetoresistive Sensor (VGMR) with two VGMR structures (61 A, 61 B), each responding differently to an external magnetic field, producing a differential signal proportional to the field. The magnetizations (M1, M1, M2, M2) in each of the sensors are oriented antiparallel. The antiparallel...http://www.google.fr/patents/US6556388?utm_source=gb-gplus-shareBrevet US6556388 - Differential VGMR sensor
