CRX-VF with PS-HM-8425 specifications

Hall effect measurement capabilities

Mobility1 to 1 × 106 cm2/V s
Carrier concentration density8 × 102 to 8 × 1023 cm-3
Resistivity1 × 10-5 to 1 × 105 Ω·cm
Standard resistance range 
 ±0.5% rdg ±0.5% range VdP/Hall bar minimum: 0.5 mΩ
Maximum: 10 MΩ
 ±0.075% rdg ±0.05% range Maximum: 5 MΩ
Optional high resistance range 
 ±0.25% rdg VdP/Hall bar minimum: 10 kΩ
Maximum: 50 GΩ
 ±1.5% rdg Maximum: 100 GΩ
*Probe contact resistance may vary with sample

Magnetic field

Magnet typeSuperconducting solenoid
Field of orientationVertical (perpendicular to the sample plane)
Field controlCurrent control
Field capability±2 T for Hall measurement; 2.5 T maximum
Field homogeneity0.5% over 10 mm diameter; 1.0% over 25 mm diameter
Landed probe tip movement<5 µm full field ramp

Sample environment

Cooling source2-stage closed cycle refrigerator (CCR) with 1 W cooling power at 4.2 K
Cooling assembly type3-stage (sample + magnet + radiation shield)
Radiation shieldingMagnet radiation shield; main radiation shield with top viewport surrounds sample
Sample temperature10 K to 400 K


Maximum sample size:51 mm (2 in) diameter
Sample backside optical access:Not an option
Sample rotation:Not an option

Vibration at sample

<1 µm

Probing configurations

Maximum probes:6
Probe arm sensor:Included for monitoring probe temperature
Cooled probe mounts:<50 K with sample at base temperature
Probe mount:Thermally anchored to radiation shield
Probe arm:Thermally anchored to radiation shield
DC/RF probes and DC/RF flexible probes:Electrical isolation >100 GΩ for low leakage measurements
Microwave probes:Frequency range DC up to 67 GHz for RF measurements
Fiber optic probes:Available for electro-optical measurements
Probe landing:All probes can land at single point in a 25.4 mm (1 in) diameter circle

Cryogen consumption

Room to base temperature (total):Not required
Helium at 5 K:Not required

Temperature equipment

Sample stage sensor/heater power:TG-120-CU-HT calibrated GaAs/50 W
Magnet stage sensor/heater power:CX-1030-CU calibrated Cernox/100 W
Radiation shield sensor/heater power:DT-670C-CU silicon diode/50 W
CCR 2nd stage sensor/heater power:DT-670A-CU silicon diode/no active control
CCR 1st stage sensor/heater power:DT-670C-CU silicon diode/100 W
Probe arm:DT-670C-SD silicon diode (on one probe arm)/no active control
Electronics console::
Temperature controllers:Two Model 336s
Magnet power supply:Model 625
Helium transfer line:Not required

Included sample holder:

Removable SH-1.25-G, 31.8 mm (1.25 in) maximum sample size, grounded

Vacuum chamber

Material:Electroless nickel-plated aluminum
Overall size:280 mm (11 in) outer diameter × 270 mm (10.6 in) tall
Chamber access:229 mm (9 in) diameter opening
Viewport:63.5 mm (2.50 in) diameter fused quartz
Viewing area:54.0 mm (2.13 in) diameter
Pump port:NW 40 with included vacuum isolation valve
Gauge port:NW 25
Gas port:0.25 in NPT with valve
Over pressure safety:3.5 kPa (0.5 psi) pressure relief valve

Radiation shielding

Material:Electroless nickel-plated aluminum
Sample access:203 mm (8 in) diameter lid
Viewport:50 mm (1.97 in) diameter IR absorbing window
Viewing area:50 mm (1.97 in) diameter

Vision system

Included kits

Tool kit:Included tools for standard operation
Spares kit:Included kit for common consumable items
Probe starter kit:ZN50R-25-W (qty 2), ZN50R-25-BECU (qty 2), and ZN50R-CVT-25-W (qty 2), and ZN50R-CVT-25-W-AU (qty 7) for training


Magnetic fieldTemperature rangeConfiguration
2.5 T10 KUp to 6 probe arms installed
2 T11 K to 400 K
1 T401 K to 500 K

1Base temperature assumes heat load for probes thermally anchored as listed in probing section

Control stability

Sample stage temperature Stability
Base temperature (no heater control)Not specified
<10 K±50 mK
10 K to 100 K±10 mK
101 K to 250 K±10 mK
251 K to 350 K±10 mK
351 K to 500 K±10 mK

 Standard TPS-FRG PS-HV-CPX option
Pump down time90 min (to reach <1 × 10-3 Torr)30 min (to reach <1 × 10-3 Torr)
Room temperature<5 × 10-4 Torr<5 × 10-6 Torr
Base temperature<1 × 10-5 Torr<5 × 10-7 Torr
Maximum temperature<1 × 10-5 Torr<5 × 10-7 Torr

Cycle time

Full cycle time8.5 h
Pump down:1.5 h
Station cooldown:5 h
Station warmup:2 h


 Standard TPS-FRGPS-HV-CPX option
Pump down time90 min
(to reach <1 × 10-3 Torr)
30 min
(to reach <1 × 10-3 Torr)
Room temperature<5 × 10-4 Torr<5 × 10-6 Torr
Base temperature<1 × 10-5 Torr<5 × 10-7 Torr
Maximum temperature<1 × 10-5 Torr<5 × 10-7 Torr


Station footprint800 mm (31.5 in) width × 670 mm (26.4 in) depth (does not include console or CCR compressor)
Console footprint766 mm (30.2 in) width × 754 mm (29.7 in) depth
CCR compressor footprint434 mm (17 in) width × 483 mm (19 in) depth


1-phase voltage100/120/220/240 VAC (+5%, -10%), 50/60 Hz
1-phase power3.5 kVA recommended
3-phase voltage (CCR)200 VAC (50/60 Hz) or 380/400/415 VAC 50 Hz or 480 VAC 60 Hz
3-phase power (CCR)9 kVA recommended

Cooling water

Power dissipation (CCR)8.5 kW max; 6.9 kW steady state at 50 Hz; 9.0 kW max; 7.8 kW steady state at 60 Hz — see list of available recirculating chillers


All instruments CE marked


PS-HM-8425 overview

PS-HM-8425 software

PS-HM-8425 sample holders

PS-HM-8425 probing configurations

PS-HM-8425 vision system