Fully automated measurement environment Temperature range
• 1.6 K to 400 K standard
• 300 mK option with 3He refrigerator
• 50 mK option with dilution refrigerator
• High Temperature Range: 700 / 1000 K
• milli-Kelvin stability across range Magnetic field
• Up to 9 T with mini CFMS
• Up to 18 T with high field CFMS
• Very low field option with precise control close to zero field Benefits of the Cryogen-Free Measurements System (CFMS) Shared facility – for all users
• Completely cryogen-free
• No special experience required
• Very long maintenance interval Very safe and convenient
• No liquid cryogen transfers
• No hazard from evaporating gases
• Full protection during power loss
• Fast sample exchange Modular architecture
• Compatible with all measurement modules
• Rapid interchange between modules Automated control
• Stable field and temperature performance
• Unattended operation
• Enables complex & long-duration experiments Through-life support
• Direct support from factory
• Remote system support via the internet
• International service team
• Free software updates
Standard CFMS
| Magnetic field | 10～18 Tesla |
| Central field homogeneity for VSM | 0.1% over 3 cm×Ø 1 cm cylinder at field centre |
| Persistent mode decay rate | 10 ppm/hr (optional switch) |
| Outer vacuum can diameter | 850 mm |
| Total height (inc. cryocooler and VTI) | 1300 mm |
| Cooldown time | 24 hours |
| System continuous operation | 20,000 hours |
Mini CFMS
| Magnetic Field | 3～9 Tesla |
| Central field homogeneity for VSM | 0.1% over 1cm ×Ø 1cm cylinder at field centre |
| Persistent mode decay rate | 10 ppm/hr (optional switch) |
| MiniCFMS dimensions | 660 mm ×400 mm |
| Total Height (inc. cryocoolers and VTI) | 900 mm |
| Cooldown Time | ＜ 12 hours |
| System Continuous operation | 30,000 |
Cryogen Free Integrated Variable Temperature Insert
| Sample Space | 25 mm |
| Temperature range (witd continuous gas flow in VTI) | 1.6 K to 400 K |
| witd optional inserts (not available for all measurements): | up to 700 K witd heated sample platform Down to 0.3 K witd Helium-3 insert |
| Temperature control: (witd Lakeshore series unit) | 5 mK @ 10 K 10 mK @100 K 50 mK @ 300 K |
| Typical sample cooldown time to 1.6 K | 60 minutes |
| Temperature stabilisation time for a typical 10 K temperature step. | Accuracy: Set time: ± 1 K 1 minute ± 0.1 K 10 minute ± 0.01 K 15 minute |
Vibrating Sample Magnetometer (VSM)
| Range of tde z-axis translation stage | 100 mm |
| Vibration amplitude Typically | 2 mm |
| Vibration frequency Typically | 20 Hz |
| Maximum sample size | 10 mm |
| Optimum sample size | 5 mm or smaller |
| Maximum sample size | 10 mm |
| Optimum sample size | 5 mm or smaller |
| Noise base (10 sec averaging) | 1 ×10-6 emu |
| Dynamic range (standard) | 108 |
| Accuracy and reproducibility | 0.50% |
| Noise level | 2 ×10-6 emu/√Hz +B ×5 ×10-7 emu / T /√Hz |
AC Susceptibility
| Maximum AC field | 20 gauss at 100 Hz |
| Sensitivity at 1KHz | 10-7 emu at 4 K |
| Useful range of frequency | 1 Hz to 20 KHz |
| Maximum sample size | 5 mm diameter |
Resistivity and Hall Effect
| Maximum sample size | 5×10 mm |
| Supply current range v (witd 2400) | 1 nA to 1 A |
| Resistance measurement range (DC) | 100 nΩ to 1 GΩ |
| Voltage sensitivity (witd 2182) | 10 nV to 100 V |
| Accuracy of resistance measurement | ＜ 0.1% 1-106 ohm |
AC Resistance/Hall Effect
| Frequency range | 1 mHz～100 kHz |
| Current source range | 2 pA～100 mA |
| Voltage measurement range | 10 nV～1 V |
Specific Heat
| Temperature range | 3～300 K |
| Temperature resolution | 0.1 K at 50 K |
| Frequency of temperature modulation | 0.1～100 Hz typical 0.01～0.1 K |
| Amplitude of temperature modulation | 0.01～0.1 K |
| Sensitivity | 1 nJ/K |
| Typical sample dimensions | 100×200 microns |
| Typical sample mass | 1～10 microgram |
Thermal Transport
| Temperature range | 2～350 K |
| Range of tdermal conductance measurement | 1 μW/K～1W/K at 300 K 0.1 μW/K～10 mW/K at 10K |
| Absolute accuracy | Better than 5% |
| Range of tdermal EMF measurement Absolute accuracy | 1 μV/K to 1 V/K Better than 5% |
| Typical sample size | 1×1×10 mm |
700K Furnace
| Standard temperature range | 200～700 K |
| Sample size | 5 mm |
1000K Furnace
| Required VTI Size | 30 mm |
| Standard temperature range | 300 K～1000 K |
| Sample size | 5 mm |
Ultra Low Field
| Supply current range | ± 500mA |
| Range | ± 50mT |
| Accuracy | 10-4 |
| Step size | 1 μT |
Helium-3 Insert
| Base temperature | ＜300 mK |
| Working temperature range | ＜300 mK～325 K |
| Outer diameter | 22 mm (to suit 25 mm VTI) |
| 3He capacity | Total 3He gas volume 1.5 STP litres Working volume in normal use approx 1.0 STP litres |
| Initial Cooldown time | 2 hours from room temperature sample change to 3He condensation temperature under standard cryogen-free VTI operating conditions |
| Recondensation time | 25 minutes to condense 90% of 3He charge and cool pot to below 2 K |
| Performance | 24 hours at 285 mK witd zero load 12 hours at 340 mK witd 25μW load 3 hours at 550 mK witd 185μW load |
Dilution Refrigerator
| Base temperature | 50 mK |
| Cooldown time from room temperature to 50 mK | 8 hours |
| Sample space | 12 mm diameter Compatible witd standard 6 pin resistivity plug-ins |
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