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High sensitivity magnetic characterisations laboratory
Laboratorio VSM-SQUID-PPMS

The laboratory provides specialist expertise for the complete characterization of magnetic materials through the following activities:

  • Magnetic hysteresis loops: measurement of magnetization as a function of the magnetic field. Determination of magnetic parameters, such as saturation and remanence magnetization and coercive field. Hysteresis loops can be measured as a function of temperature (2 - 1000 K) and sample orientation;

  • First Order Reversal Curve (FORC): determination of coercivity distributions and magnetic interactions. This technique is of interest for the study of nanostructured systems and multiphase materials;

  • Magnetization as a function of time, angle, and temperature: characterization of magnetic phenomena dependent on time (relaxation, etc.), orientation (magnetic anisotropies, etc.), and temperature (phase transitions, critical temperatures, etc.);

  • Remanence curves: determination of magnetic remanence properties (IRM, DCD) for the analysis of magnetic interactions and stability of materials;

  • AC magnetic susceptibility: measurements of complex susceptibility as a function of frequency and temperature;

  • AC/DC magneto-transport: characterization of electrical transport properties in the presence of a magnetic field (magnetoresistance, Hall effect, etc.), in DC and AC regimes;

  • Customization of experiments as a function of magnetic field and temperature: design and implementation of customized experimental protocols, with control of magnetic field (up to 9 T) and temperature (2 - 400 K), to meet specific research and development needs.

The equipment available in the laboratory includes:

  • Vibrating Sample Magnetometer (VSM): a high-performance system that combines high sensitivity and fast acquisition. It allows magnetic characterization as a function of the applied field, angle, and temperature;

  • SQUID Magnetometer: an extremely sensitive instrument, ideal for analyzing nanoscale magnetic materials and low magnetization systems. It allows measurements at temperatures down to 2 K with magnetic fields up to 7 T;

  • Physical Property Measurement System (PPMS): cryomagnetic system for characterizing the magnetotransport properties of materials. It operates in the temperature range between 2 and 400 K, with applied magnetic fields up to 9 T. The PPMS offers flexibility and modularity, allowing the design of customized experimental protocols.