Frequency and Field Dependences of Giant MagnetoImpedance Effect in Sandwiched FeCuCrVSiB.pdf

CHINPHYSLETT Vol No Frequency and Field Dep endences of Giant MagnetoImp edance Eect in Sandwiched FeCuCrVSiB Films DAI YouYong
 XIA O ShuQin   LIU YiHua   ZHANG Lin WU HouZheng  ZHANG YanZhong   Departmen t of Physics Shandong University Jinan Shanghai Iron and Steel Research Institute Shanghai Received May The gian t magnetoimp edance GMI eect has b een in vestigated in sandwiched FeCuCrVSiB lms annealed at C for h The frequency and eld dep endences of the GMI ha ve b een observed in the frequency range from kHz to MHz The GMI ratio increases at rst with increasing frequency and reaches its maxim um value of at a very lo w characteristic frequency of ab out MHz and then decreases with further increasing frequency These sup erior prop erties are related to the sp ecial structure of the sandwiched lms PA CS i h Kj The large magnitude of magnetoimp edance MI the target and the substrate holder were waterco oled Silicon slides of thickness mm were emplo eects together with a very high sensitivity at low yed as elds lack of hysteresis and hightemp erature stabil substrates The samples consisted of an inner Ag ity has promising applications in eld sensors Re conductive layer with two electro des and outer Fe cently very large MI eects in a numb er of soft mag CuCrVSiB denoted