A magnetometer instrumentation technique using a miniature transducer

This paper describes a magnetometer with a miniature transducer which can be scanned automatically. The active area of the transducer is 0.64×0.76 mm and its drive circuit is constructed from wire plated with a magnetic coating. The magnetometer is capable of detecting static magnetic fields as low as 0.02 Oe and can measure magnetic fields as close as 0.08−0.10 mm from a relatively flat surface since the transducer is flat and rugged. The magnetometer is simple to operate and has a fast response. The instrument has been applied to the measurements of magnetic fields arising from remanent magnetization in experimental plated‐wire memory planes and regions of magnetic activity in geological rock specimens.