Vibrating sample magnetometer DXV series

magnetization curve

What is a vibrating sample magnetometer used for?
A vibrating sample magnetometer (VSM) (also named M-H Curve Hysteresis Graph Test System) is a scientific instrument that measures the magnetic properties (such as magnetization curves, hysteresis loops, demagnetization curves, temperature rise/fall curves) of materials based on Faradays Law of Induction. 
Thus, various corresponding magnetic parameters such as saturation magnetization, remnant magnetization, coercive force, magnetic energy product, Curie temperature, magnetic permeability, etc. are obtained.




What is the principle of VSM measurement?
A sample is first placed in a constant magnetic field (mounted on the sample holder and placed between the electromagnet poles) and if the sample is magnetic it will align its magnetization with the external field. The magnetic dipole moment of the sample creates a magnetic field that changes as a function of time as the sample is moved up and down. This is typically done through the use of a piezoelectric material. The alternating magnetic field induces an electric field in the pickup coils of the VSM. The current is proportional to the magnetization of the sample - the greater the induced current, the greater the magnetization. As a result, the Hysteresis loops of the materials, Magnetization curve, Warming Curve, Cooling curve and the changes in the temperature as time goes away will be recorded, then from there the saturated strength of the magnetization, the left strength of the magnetization, Coercive force, the Max of Magnetic energy product, the Curie temperature and the Magnetic conductivity(the Initial Magnetic conductivity is included ) of the sample can be deduced.




Testable materials for VSM Magnetometer 
Diamagnetic, Paramagnetic, Ferromagnetic, Ferrimagnetic, Antiferromagnetic materials and Anisotropic materials;
 Particulate and continuous magnetic recording materials and GMR, CMR, exchange biased and spin-valve materials;
 Magnetic-optical materials;
 Bulk materials, powders, thin films, single crystals, and liquids are readily accommodated.




Main Specifications of Vibrating Sample Magnetometer   
Measure the scope of the magnetic moment: 10⁻³emu - 300emu (Sensitivity5×10⁻⁵emu).
   Relative accuracy (30emu ): better than ±1%.
   Repeatability (30emu): better than ±1%.
   Stability (30emu): Preheating 24 hours, 24 hours of continuous work superior ±1%.
   Temperature range: from -196 to 900.
   The magnetic Pole pitch for a fixed spacing is 35 mm, and the pole face diameter is 60 mm.
   Magnetic field: supplied by the electromagnet, from 0 to 3.8T.