Vibrating Sample Magnetometer MAHYD

Vibrating Sample Magnetometer is a test system for magnetic properties of various materials.

Application possibilities:

• investigation of magnetic properties of a large variety of different materials as a function of time, temperature and magnetic field intensity.
• measurement of magnetic properties of variety solids or liquids, including materials of special, industrial and household applications: magnetic recording materials, metal alloys, amorphous materials, materials for sensors, loks, permanent magnets for loudspeakers, motors, filters, etc.
• grain-size analysis of assembles of small ferromagnetic particles: magnetic fluids, oxide powders, catalyst, inks, toners.

Advantages:

Specially developed software allows performing a "magnetogranulometry" analysis of polydisperse systems obeying Langevin mechanism of magnetization.

• the largest applied magnetic field (magnet SP-58B): 4 T;
• field range for magnetic investigation: -2T - 0 +2T:
• temperature: 77K-:-500K;
• sensitivity: 0.0001 emu;
• maximal size of sample: 8 mm (diameter);

Figures represent a magnetization curve of a colloid containing chemically coprecipitated complex ferrite nanoparticles (Fig. 1) and a spectrum of their magnetic moments (Fig. 2) determined assuming the superparamagnetic behaviour of assemble of polydisperse sub-domain particles.

Reference:

M. M. Maiorov. Magnetization curve of magnetic fluid and distribution of magnetic moments of ferroparticles. In: Proc. 10^th Riga MHD Conference, Institute of Physics, Salaspils, 1981, p. 192-193 (in Russian).