- Name: CFMS-PPMS
- Make : Cryogenic Limited
- Model: 5424
- Available modes: VSM and Resistivity
1. VSM Mode
- Magnet able to operate in swept or persistent mode
- Automated gas handling system and calibration procedure
- Pick-up coils located close to the samples for highest sensitivity
- Vibrator fitted with moving coil motion detector for amplitude control
- Rigid and thermally stable carbon fibre sample rod
- Active vibration compensation of the drive motor
2. Resistivity Mode
- The Electrical Transport module provides a capability to perform DC resistance measurements in the range from 100 nΩ to 1 GΩ. Cryogenic offers a selection of sample platforms with different numbers of sample connections and suitable for different sample sizes. Probe wiring options include twisted pairs, miniature coaxial cables (for high-frequency measurements) or triaxial lines (for very low current measurements).
- 1.Resistance & magnetoresistance
- 2.Current-Voltage (I-V) characteristics
- 3.Critical current
| Maximum Magnetic field Range | ± 7 Tesla | |
| System Refrigeration method | Completely cryogen-free | |
| Refrigeration technology | Cryocooler (GM or PT) | |
| Central field homogeneity | H4E: 0.01 % over 30 × Ø10 mm cylinder at field centre for VSM configurations | |
| Sample Space | Ø30 mm or Ø50 mm depending on final configuration chosen | |
| Sample environment | Sample in flowing gas or exchange gas | |
| Temperature range (with continuous gas flow in VTI) | 1.6 – 400 K | |
| Temperature control: (with Lake Shore series unit) | ±5 mK @ 10 K ±10 mK @100 K ±50 mK @ 300 K | |
| Typical sample cool-down time to 1.6 K | 60 minutes | |
| Temperature stabilisation time for a typical 5 K temperature step and ±0.1 K stabilisation. | Range: 1 – 70 K 70 – 200 K 200 – 400 K | Set time: ~1 minute ~10 minutes ~15 minutes |
| Typical persistent mode decay rate | NbTi coils to 9 T: 30-50 ppm/hr Nb3Sn coils to 18 T: 50-100 ppm/hr | |
| Typical Magnet stability in constant current mode | 5 ppm/K | |
