VSM at S N Bose National Centre for Basic Sciences
Sample Holders
SPECIFICATIONS AND PERFORMANCE
1. Measurement Type
(a) Moment Vs Temperature (FC & ZFC)
(b) Moment VS field
(c) Moment Vs Time
2. 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 |
3. 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.
4. Moment measurement
Noise floor (emu RMS) : |
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 |
5. Measurement temperature range
80K To 400K and 300K TO 1273K |
Temp stability ±0.2 K |
6. Sample Mass
0 to 10 g (higher mass can be accommodated with decreased performance)