9700A Superconducting Hall System
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9700A Superconducting Hall System

Lake Shore

Backed and supported by nearly two decades of expertise in materials characterization systems, Lake?Shore’s fully integrated Hall effect measurement systems (HMS) are used to characterize physical properties in semiconductors, as well as other electronic materials including magnetoresistors, multilayer magnetic films, dilute magnetic semiconductors, superconductors, and spintronics devices. Available in a variety of electromagnet-based configurations ranging in field up to 2 T or a powerful 9 T superconducting magnet-based configuration, Lake?Shore HMS are ideally suited for the most demanding materials research applications, product development, and quality control. An assortment of options expands the functionality of Lake Shore HMS. Modern materials ranging from compound semiconductors to nanomaterials are pushing the limits of transport measurements. Lake Shore combines precision electronics, flexible software, variable magnetic field and temperature, and a wide resistance range into the most advanced HMS. When used in combination with data taken from the variable field Hall measurement, our proprietary Quantitative Mobility Spectrum Analysis (QMSA™) software resolves individual carrier mobilities and densities in multi-carrier devices such as quantum wells and high electron mobility transistors (HEMTs).

Features of the Model 9700A

  • Standard sample resistance ranges from 0.04 mΩ to 200 GΩ
  • Fields to 9 T
  • Temperatures from 2 K to 400 K
  • Quantitative Mobility Spectrum Analysis (QMSA®) software resolves individual carrier mobilities and densities in multi-carrier devices
  • Anomalous Hall Effect measurements for spintronics including dilute magnetic semiconductors and ferromagnetic metallic alloys
Please note: the AC measurement option is no longer available for the 9700A

9700A Series Specifications

 

7704A

7707A

7710A

9709A

Magnetic field

 

Please consult
Lake Shore for
10 in magnet option information

 

Room temp

±1.3 T

±2 T

±9 T

Variable temp

±0.87 T

±1.2 T

±9 T

Temperature

 

Standard

77 K or room temperature

2 K to 400 K

CCR

15 K to 350 K

NA

Oven

350 K to 800 K

NA

Carrier concentration density

8 × 102 to 8 × 1023 cm-3

8 × 102 to 8 × 1023 cm-3

Mobility

1 to 1 × 106 cm2/V s

1 to 1 × 106 cm2/V s

Current (A)

±1 pA to ±100 mA

±1 pA to ±100 mA

Voltage (V)

0 V to 100 V

0 V to 100 V

Resistance range (standard)

2% accuracy—VdP minimum: 0.5 mΩ,
HB minimum: 0.8 mΩ, maximum: 100 GΩ
5% accuracy—VdP minimum: 0.1 mΩ,
HB minimum: 0.04 mΩ, maximum: 200 GΩ

2% accuracy—VdP minimum: 0.5 mΩ, HB minimum: 0.8 mΩ, maximum: 100 GΩ
5% accuracy—VdP minimum: 0.1 mΩ, HB minimum: 0.04 mΩ, maximum: 200 GΩ

System equipment

 

Sample holder module

75013 room temperature/77 K; 1-sided sample cards

9500-SI; 1-sided sample cards

Sample holder kit (included with sample holder module)

(1) 750SC10-50, (1) 750SC50-10, (1) 671-205, (1) 671-260, (1) 671-250, and (10) 1-inch sheets of indium foil

Integrated into 9500-SI

Sample size

Up to 10 × 14 mm (0.4 × 0.6 in) on a 25 × 75 mm (1 × 3 in) card; up to 60 mm (2.4 in) square on an 82 × 93 mm (3.2 × 3.7 in) card

Up to 76 mm (3 in) in diameter

12 × 14 mm (0.5 × 0.6 in) in a 25.4 mm (1 in) bore

Number of samples

1

1

Model 475 gaussmeter

1

NA

Model 776 matrix

1

1

Keithley equipment

 

6220 Current Source

1

1

6485 Autoranging Digital Picoammeter

1

1

2182A Digital Voltmeter

1

1

Magnet

EM4-HVA

EM7-HV

Superconducting

Pole diameter

102 mm (4 in)

178 mm (7 in)

NA

Pole face diameter

102 mm (4 in)

152 mm (6 in)

76.2 mm (3 in)

NA

Maximum magnetic field at room temperature

1.3 T (13 kG) at 25 mm (1 in) air gap

1.6 T (16 kG) at 25 mm (1 in) air gap

2.17 T (21.7 kG) at 25 mm (1 in) air gap

9 T

Maximum magnetic field at variable temperature

0.87 T (8.7 kG) at 51 mm (2 in) air gap

1.18 T (11.8 kG) at 51 mm (2 in) air gap

1.47 T (14.7 kG) at 51 mm (2 in) air gap

9 T

Field homogeneity

±0.1% over 10 mm3 (0.4 in3)

±0.1% over centered 51 mm (2 in) diameter circle

±0.1% over 60 mm (2.3 in) on axis

Cooling water requirements

Tap water or closed cycle cooling system (optional chiller available)

Liquid helium

Inlet temperature

25 °C (77 °F) maximum

32 °C (90 °F) maximum

NA

Pressure drop

200 kPa (30 psi)

220 kPa (32 psi)

NA

Flow rate

7.6 L (2 gal)/min

11.4 L (3 gal)/min

NA

Water chiller cooling capacity

2.5 kW (8,530 BTU)/h

5 kW (17,060 BTU)/h

NA

Bipolar magnet power supply

643

648

625

Mode

DC

DC

Maximum output

±35 V ±70 A (2450 W)

±75 V ±135 A (9.1 kW nominal)

±5 V/±60 A (300 W)

AC line input

204/208 VAC ±10%, 13 A/phase; 220/230 VAC ±10%, 12 A/phase; 380 VAC ±10%, 7 A/phase; 400/415 VAC ±10%, 6.5 A/phase at 50/60 Hz

200 VAC ±10%, 41 A/phase;
208 VAC ±10%, 40 A/phase;
220 VAC ±10%, 38 A/phase;
230 VAC ±10%, 37 A/phase;
380 VAC ±10%, 23 A/phase;
400 VAC ±10%, 21 A/phase;
415 VAC ±10%, 21 A/phase

Single phase 100, 120, 220, 240 VAC +6% -10%, 50 or 60 Hz, 850 VA

Flow rate

5.7 L (1.5 gal)/min minimum

7.6 L (2 gal)/min

NA

Cooling water requirements

Tap water or closed cycle cooling system (optional chiller available) +15 °C to +30 °C

Tap water or closed cooling system (optional chiller available) +15 °C to +30 °C

Air cooled

Computer

Dell® computer with HDD, CD-ROM, 19-inch SVGA flat screen monitor, Windows® OS, Hall software, and National Instruments IEEE-488 USB adapter

Cryogenic Probe Stations

Model

Magnet field

Max probe arms

Standard temperature range

Optional high temperature

Optional low temperature

Max sample size

Vacuum

Sample stage rotation

Optional THz probe arm

Cryogen-free cryogenic probe stations

CRX-EM-HF

0.6 T horizontal field electromagnet

4

8 K to 400 K

25 mm (1 in) diameter

10?5 Torr

±360° (optional)

CRX-VF

2.5 T vertical field superconducting magnet

6

10 K to 500 K, 10 K to 400 K with load-lock

51 mm (2 in) diameter

10?5 Torr standard, 10?7 Torr optional

 

CRX-4K

6

4.5 K to 350 K

20 K to 675 K

51 mm (2 in) diameter

10?5 Torr

 

CRX-6.5K

6

<10 K to 350 K

20 K to 675 K

51 mm (2 in) diameter

10?5 Torr

Cryogenic probe stations

FWPX

6

4.5 K to 475 K

3.5 K

102 mm (4 in) diameter

10?5 Torr

±5°

EMPX-H2

0.6 T horizontal field electromagnet

4

4.5 K to 400 K; 8 K to 400 K with 360° rotation option

3.2 K

25 mm (1 in) diameter

10?5 Torr

±360° (optional)

CPX-HF

1 T horizontal field superconducting magnet

4

4.2 K to 400 K

2 K

25 mm (1 in) diameter

10?5 Torr standard, 10?7 Torr optional

±5°

CPX-VF

2.5 T vertical field superconducting magnet

6

4.2 K to 400 K, <10 K to 400 K with load-lock

2 K

51 mm (2 in) diameter

10?5 Torr standard, 10?7 Torr optional

±5°

 

CPX

6

4.2 K to 475 K, <10 K to 400 K with load-lock

20 K to 675 K cannot be used with load-lock sample assembly

Low temp: 1.9 K very low temp: 1.6 K

51 mm (2 in) diameter; 12.7 mm (0.5 in) with load-lock

10?5 Torr standard, 10?7 Torr optional

±5°

 

TTPX

6

4.2 K to 475 K

20 K to 675 K

3.2 K

51 mm (2 in) diameter

10?5 Torr

PS-100

4*

4.2 K to 475 K

20 K to 675 K

3.2 K

32 mm (1.25 in) diameter*

10?5 Torr

*As currently configured. The PS-100 can be field upgraded to six probe arms and support larger sample sizes by selecting optional equipment from the TTPX probe station family.