Abstract
The influence of different types of thermal magnetic treatment of ferroprobe cores made of the Fe73.5Cu1Nb3Si13.5B9 nanocrystalline alloy on the characteristics of primary transducers of a drill-hole magnetometer has been studied. The informative parameters of the Barkhausen effect (a stepwise change in the magnetization of a material) were used to monitor the quality of the cores. Thermal magnetic treatment in a high-frequency magnetic field has been shown to be the optimum treatment for decreasing the sensitivity threshold of a magnetometer, whereas thermal magnetic treatment in a constant magnetic field is the optimum method for improving the operational characteristics of a magnetometer.
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Astrakhantsev, Y.G., Korzunin, G.S., Lavrent'ev, A.G. et al. Quality Control of Cores Made of Nanocrystalline Alloys Intended for Primary Transducers of a Drill-Hole Magnetometer–Inclinometer. Russian Journal of Nondestructive Testing 40, 264–268 (2004). https://doi.org/10.1023/B:RUNT.0000043676.98977.9b
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DOI: https://doi.org/10.1023/B:RUNT.0000043676.98977.9b