High-precision measurements of magnetic properties of materials (hysteresis characteristic, saturation magnetization, remnant magnetization and so on) can be performed in temperature range from 80 K up to 400 K. The system is compact, has small weight and low cost due to new constructive decisions. Effectiveness and simplicity of the system operation is effectuated by flexible software. Magnetometer can be used in scientific and applied researches (physics of magnetic phenomena, magnetochemistry, science of materials) as well for certification and quality test of magnetic materials.

Fig. 1. General view of vibromagnetometer.

Fig. 2. Measurement loops of the high-sensitivity cryogenic preamplifier.

Fig. 3. High-sensitivity cryogenic preamplifiers with vertical and horizontal measurement loops. Low-noise cooling preamplifiers, used in construction of this vibromagnetometer, can be also utilized for registration of supersmall signals (down to 0,2 nV/Hz^1/2) from low resistivity sources with low output resistance to 60 Ohm. Such cryogenics preamplifiers can be successfully used for research magnetic, electricall and other characteristics of different physical objects.