A VECTORIAL VIBRATING REED MAGNETOMETER WITH HIGH-SENSITIVITY

A vibrating reed magnetometer with high sensitivity is constructed. Us ing optical signal pickup, modified excitation coils, and an acoustica l reference excitation system, the high sensitivity of former construc tions is combined with the detection of the magnetization component pe rpendicular to the bias field H. The calibration procedure providing i ncreased reliability is simplified and allows hysteresis measurements with the magnetic easy axis of the sample oriented at an arbitrary ang le with respect to H. Measurement results are given in order to demons trate the performance of the apparatus.