| 摘要 |
Magnetic pressure sensor device, of the type comprising at least one magnetic layer ( 11 ) able to vary a magnetisation associated thereto in response to a pressure (P) exerted thereon. Said device ( 20; 30; 40; 50 ) comprises a plurality of layers ( 11, 12, 13, 14, 15, 16, 17 ) arranged in a stack, said magnetic layer ( 11 ) able to vary a magnetisation associated thereto in response to a pressure (P) comprising a free magnetic layer ( 11 ), able to be associated to a temporary magnetisation (MT), said free magnetic layer ( 11 ) belonging to said plurality of layers ( 11, 12, 13, 14, 15, 16, 17 ), which further comprises at least a spacer layer ( 13; 23; 33 ) and a permanent magnetic layer ( 12 ) associated to a permanent magnetisation (MP). Said sensor device ( 20 ) further comprises a compressible layer ( 21; 31; 42 ) and a layer with high magnetic coercivity ( 22; 32; 42 ) associated to said plurality of layers ( 11, 12, 13, 14, 15, 16, 17 ).
|
