H. Wan et al., COMPARISON OF FLICKER NOISE IN SINGLE-LAYER, AMR AND GMR SANDWICH MAGNETIC-FILM DEVICES, IEEE transactions on magnetics, 33(5), 1997, pp. 3409-3411
Flicker noise comparison has been made on single layer NiFeCo, Sandwic
h AMR NiFeCo/TaN/NiFeCo and GMR NiFeCo/CoFe/Cu/CoFe/NiFeCo films. In a
single magnetic domain state, AMR films have noise close to the therm
al noise, GMR has 2-3 times higher noise, and in a state having a usef
ul MR ratio, the GMR film has 10 times higher noise than AMR sandwich
film, while the sandwich film has 10 times higher noise than single la
yer AMR film.