Patent ID: 9297669
Filing Date: 2016-03-29
CPC Classification: B82Y,G01D,G01R,G11B,H01L,Y10T

Claim Text:
1. A manufacturing method comprising: providing a bias field generator to generate a bias magnetic field having a field component in a first direction, wherein the bias field generator comprises a body of permanent magnetic material or magnetizable material with a cavity such that the cavity is laterally hounded in a second direction by first and second inclined surface sections of the body and in third direction by third and fourth inclined surface sections of the body, the second direction being orthogonal to the first direction and the third direction being orthogonal to the second direction and the first direction; and arranging a magneto sensor in a part of the cavity wherein the magneto sensor is arranged to be laterally bound by the first and second inclined surface sections and to be laterally hound by the third and fourth inclined surface sections.