Combined lanthanum manganite magnetoresistive-fluxgate magnetic field sensor

The combined magnetoresistive-fluxgate sensor was fabricated utilizing colo ssal magnetoresistive and magnetic properties of doped lanthanum La0.60Pb0. 40MnO3 manganite. The anomalies of skin effect and penetration of the radio frequency (rf) electromagnetic field were studied in detail in the 20 kHz- 30 MHz frequency range for various mutual orientations between the if and p ermanent magnetic fields. The sensitivity 0.7-2% per Oe depending on the el ectromagnetic wave frequency was achieved. The results can be important in relevance to possible applications of doped lanthanum manganites as magneti c field sensitive elements for magnetoelectronics and nondestructive testin g. (C) 2001 Elsevier Science B.V. All rights reserved.