Research Hall
Instruments which are not sensitive to the influence of the earth's field or which apply large fields, are housed in the main Research Hall. In specific cases external static fields are compensated by Helmholtz-coils.
A high field torque magnetometer has been designed for measuring the deviatoric susceptibility of rocks and minerals in fields up to 1.5 T . It is controlled by a LabVIEW-program.
The strong electromagnet is computer-controlled and produces a constant magnetic field between 0 and 1.5 T .
A external page Princeton Measurements Corporation MicroMag 3900 Vibrating Sample Magnetometer (VSM) can be used for magnetization measurements in fields up to 1 T. An oven and a cryostat are available, which allow measurements between ca. 20 K and 1000 K .
The external page Princeton Measurements Corp. MicroMag 2900 Alternating Force Gradient Magnetometer (AGM) is a highly-sensitive, computer-controlled susceptibility measurement system. It is capable of measuring the magnetic properties of a wide range of sample materials. In contrast to the VSM, in which the sample is caused to vibrate by an electromechanical transducer with a fixed frequency, the AGM uses an alternating field-gradient to generate a periodical force on the sample in a variable or static DC-field. This force is proportional to the field-gradient and to the magnetic moment of the sample.
A cryostat is available for measurement between ca. 15 K - 300 K.