Vibrating Sample Magnetometer (VSM)
Fig: Vibrating Sample Magnetometer unit
Specifications and Performance
Measurement Type
- Moment vs Temperature (FC & ZFC)
- Moment vs Field
- Moment vs Time
Applied field strength
38.1 mm (1.5 in) magnet air gap
16.7KOe (1.67T)
Field homogeneity
±0.1% over cantered 5 cm (2 in) diameter circle
Gauss meter probe
Hall probe High stability; 74 mm (2.9 in) aluminium stem
For best results, the instrument and probe we warm up for at least 5 minutes before zeroing the probe, And at least 30 minutes for rated accuracy. The probe and the zero gauss chamber remains in the same temperature.
Moment measurement
Noise floor (emu RMS)
With single stage variable temperature option, 0.1 TC, 10 s/pt 1.25 μemu
Dynamic range
1 × 10-7 to 103 emu
Time constants (TC)
0.1, 0.3, 1.0, 3.0, or 10.0 s
Moment stability2
Better than ±0.05% of full scale/day for fixed coil geometry at constant field and temperature
Reproducibility
Better than ±0.5%, or ±0.1% of full scale, fixed rotation angle and range, with sample replacement
Moment accuracy
Better than 1% of reading ±0.2% of full scale with a geometrically identical test sample and calibran
Measurement temperature range
80K to 400K and 300K to 1273K
Temp stability ±0.2 K
Temperature resolution 0.001 K
Sample Mass
0 to 10 g (higher mass can be accommodated with decreased performance)