1. VersaLab Cryo-free VSM System Electronics VSM linear motor sample drive Magnet power Supply 3 Tesla Niobium- Titanium superconducting magnet Sumitomo 4K CryoCooler

2. VersaLab Cryo-free VSM Overview n Cryo-free using small Sumitomo 4 K CryoCooler n Offers sensitivity of better than 1 x 10 -6 emu n 3 tesla superconducting magnet n Temperature Range: 50 to 400 K n Cooling Down Time: ~ 90 minutes n VSM Sample Space: 6 mm (and an optional 1.2 cm)

3. VersaLab Cryo-free VSM Field Control n Magnet Design: Conductively-cooled NbTi Superconducting n Magnetic Field Range: -30 kOe to +30 kOe n Field Uniformity: 0.1% over 2.4 cm n Field Charging Rate: 0.1 Oe/sec to 300 Oe/sec n Field Setting Resolution: 60 mOe

4. Sensitivity n NiFe thin film from NIST n RMS noise < 10 -6 emu @ 1 sec averaging

5. Sensitivity

6. Noise

7. Field Control

8. VersaLab Cryo-free VSM Future Options n 1000 K Oven n Heat Capacity Measurements n AC Transport Electrical Measurements n Sample Rotation