Specifications

 84048407
 DCACDCAC
Measurement specifications
Mobility
1 to 1 × 106 cm2/v s1 × 10-3 to 1 × 106 cm2/v s1 to 1 × 106 cm2/v s1 × 10-3 to 1 × 106 cm2/v s
Carrier concentration density
8 × 102 to 8 × 1023 cm-3  8 × 102 to 8 × 1023 cm-3
Resistivity
1 × 10-5 to 1 × 105 Ω·cm  1 × 10-5 to 1 × 105 Ω·cm
Electronic specifications*
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

VdP/Hall bar: 0.5 mΩ to 10 MΩ

300 nV RMS noise floor for sample resistances up to 100 Ω;
500 nV RMS over most of the recommended resistance range above 100 Ω

±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

VdP/Hall bar: 0.5 mΩ to 10 MΩ

300 nV RMS noise floor for sample resistances up to 100 Ω;
500 nV RMS over most of the recommended resistance range above 100 Ω

Optional high resistance configuration

±0.25% rdg:
VdP/Hall bar minimum: 10 kΩ
Maximum: 50 GΩ

±1.5% rdg:
Maximum: 100 GΩ

±5% rdg:
Maximum: 200 GΩ

VdP/Hall bar: 10 kΩ to 8 GΩ

<1250 nV RMS noise floor for
sample resistances up to 10 MΩ

±0.25% rdg:
VdP/Hall bar minimum: 10 kΩ
Maximum: 50 GΩ

±1.5% rdg:
Maximum: 100 GΩ

±5% rdg:
Maximum: 200 GΩ

VdP/Hall bar: 10 kΩ to 8 GΩ

<1250 nV RMS noise floor for
sample resistances up to 10 MΩ

Optional low resistance configuration
ResistanceLow resistance voltage noise floor
<0.1 Ω5 nV
<10 Ω30 nV
<100 kΩ150 nV

For resistance larger than 10 Ω, the voltage noise floor is independent of current for currents less than 1 mA.
NA
ResistanceLow resistance voltage noise floor
<0.1 Ω5 nV
<10 Ω30 nV
<100 kΩ150 nV

For resistance larger than 10 Ω, the voltage noise floor is independent of current for currents less than 1 mA.
NA
Current
±1 pA to ±100 mA±1 pA to ±100 mA
Compliance voltage
100 V100 V
Environment
Room temperature field**
(25 mm [1 in] airgap)
1.67 T with standard
51 mm (2 in) pole caps
1.35 T with optional
102 mm (4 in) pole caps
1.18 T with standard
51 mm (2 in) pole caps
0.95 T with optional
102 mm (4 in) pole caps
2.10 T with standard
102 mm (4 in) pole caps
2.25 T with optional
51 mm (2 in) pole caps
1.20 T with standard
102 mm (4 in) pole caps
1.31 T with optional
51 mm (2 in) pole caps
Variable temperature field**
(50 mm [2 in] airgap)
0.89 T with standard
51 mm (2 in) pole caps
0.88 T with optional
102 mm (4 in) pole caps
0.63 T with standard
51 mm (2 in) pole caps
0.62 T with optional
102 mm (4 in) pole caps
1.45 T with standard
102 mm (4 in) pole caps
0.69 T with standard
102 mm (4 in) pole caps
Optional AC field frequency ranges
NA0.05 and 0.1 Hz NA 0.05 and 0.1 Hz
Sample size
Up to 10 mm × 10 mm × 3 mm standard,
up to 50 mm diameter × 3 mm optional
Up to 10 mm × 10 mm × 3 mm standard,
up to 50 mm diameter × 3 mm optional 
Standard module temperature
Room temperatureRoom temperature  
Single point LN2 option temperature
77 K point 77 K point 
CCR option temperature15 K to 400 K with standard CCR, 15 K to 350 K with optical CCR15 K to 400 K with standard CCR, 15 K to 350 K with optical CCR
Oven option temperatureRoom temperature to 1,273 K;
at 773 K and ±1% rdg: maximum = 1 MΩ;
at 1,273 K and ±1% rdg: maximum = 1 kΩ
Room temperature to 1,273 K;
at 773 K and ±1% rdg: maximum = 1 MΩ;
at 1,273 K and ±1% rdg: maximum = 1 kΩ
Magnet 
Pole diameter
4 in7 in
Pole cap diameter
51 mm (2 in) standard, 104 mm (4 in) optional104 mm (4 in) standard, 51 mm (2 in) optional
Air gap at room temperature
25 mm (1 in)25 mm (1 in)
Air gap with variable temperature options
51 mm (2 in)51 mm (2 in)
Field uniformity

25 mm (1 in) air gap, 51 mm (2 in) pole caps:
±0.35% over 1 cm3 (0.4 in3)
25 mm (1 in) air gap, 104 mm (4 in) pole caps:
±0.05% over 1 cm3 (0.4 in3)
51 mm (2 in) air gap, 104 mm (4 in) pole caps:
±0.15% over 1 cm3 (0.4 in3)

25 mm (1 in) air gap, 51 mm (2 in) pole caps:
±0.35% over 1 cm3 (0.4 in3)
25 mm (1 in) air gap, 104 mm (4 in) pole caps:
±0.05% over 1 cm3 (0.4 in3)
51 mm (2 in) air gap, 104 mm (4 in) pole caps:
±0.15% over 1 cm3 (0.4 in3)
Cooling (magnet and power supply)
7.6 L/min (2 gal/min), 10.3 L/min (2.7 gal/min) with CCR option19 L/min (5 gal/min), 23 L/min (6 gal/min) with CCR option  
3-phase bipolar magnet power supply 
Maximum output±35 V ±70 A (2.5 kW)±75 V ±135 A  (9.1 kW)
Utilities 
Total system cooling water power dissipation (50 or 60 Hz) — see list of available recirculating chillers
4.25 kW; 7.45 kW with optional CCR13.4 kW; 16.6 kW with optional CCR
*Probe contact resistance may vary with sample
**All field values are nominal and can vary ±1%.
 
8400 Series hardware
  T E M P E R A T U R E   O P T I O N S
 Standard room temperatureModel 84015 77 K LN2 body optionModel 84016
CCR option
Model 84017
oven option
Standard insert

Standard with system

Used together

Diagonal lineDiagonal line
Standard body

Standard with system

Diagonal lineDiagonal lineDiagonal line
Optical access body

84006, requires 84060

Diagonal line

84016-O, requires 84060

Diagonal line
Sample rotation

84010

84010

Standard with 84016

Standard with 84017

Sample mounting kit
Five 10 mm solder cards, one with PT sensor, wire and foil

Standard with system

840930

Diagonal lineDiagonal line
Sample card kit
Five 10 mm solder cards

840931

840931

Diagonal lineDiagonal line
Sample card kit
Five 10 mm solder cards with PT sensors

840932

840932

Diagonal lineDiagonal line
10 mm prober pin sample card
with PT sensor

840910

840910

Diagonal lineDiagonal line
50 mm prober pin sample card
with PT sensor

840911

Diagonal lineDiagonal lineDiagonal line
Temperature monitoring

841-STM or 840-VTA*

841-STM or 840-VTA*

Diagonal lineDiagonal line
Variable temperatureDiagonal lineDiagonal line

840-VTA

840-VTA

Pump

Not required

Not required

TPS-FRG or equivalent

E2M or equivalent
(or TPS-FRG)

Chiller for electromagnet

Consult Lake Shore

Not applicable

Consult Lake Shore

Not applicable

Floor mount hardware

840950

Not applicable

Not applicable

Not applicable

High uniformity

8404: EM4-4PB
8407: standard

8404: EM4-4PB
8407: standard

8404: EM4-4PB
8407: standard

8404: EM4-4PB
8407: standard

*If at some point you might add a variable temperature option to your HMS, 840-VTA or 841-STM should be chosen (841-STM can be upgraded to the Model 840-VTA)

 
8400 Series measurements
 
 Standard DCModel 84030 AC option 
 

= Included

 

= Option available (model number)

 

= Option required (model number)

Diagonal line

= Not compatible

 

VdP

Standard with system

Can use with AC

 
Hall bar

Standard with system

Can use with AC

 
High resistance

84031

Can use with AC*

 
Gate bias

84032

Can use with AC

 
Low resistance

84033

Diagonal line 

*Limits maximum resistance to 8 GΩ

8400 Series overviewMore about the AC field option
More about the 8400 SeriesOptions for the 8400 Series
The standard insert and sample cards