We appreciate your patience while we rebuild our online shopping portal. Please contact us directly to place an order.

The 7700 Series HMS is discontinued. Please consider the 8400 Series HMS instead.

7700 Series Specifications

 7704A7707A7710A9709A
Magnetic fieldPlease 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 
Standard77 K or room temperature2 K to 400 K
CCR15 K to 350 KNA
Oven350 K to 800 KNA
Carrier concentration density8 × 102 to 8 × 1023 cm-38 × 102 to 8 × 1023 cm-3
Mobility1 to 1 × 106 cm2/V s1 to 1 × 106 cm2/V s
Current (A)±1 pA to ±100 mA±1 pA to ±100 mA
Voltage (V)0 V to 100 V0 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 module75013 room temperature/77 K; 1-sided sample cards9500-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 foilIntegrated into 9500-SI
Sample sizeUp 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) cardUp to 76 mm (3 in) in diameter12 × 14 mm (0.5 × 0.6 in) in a 25.4 mm (1 in) bore
Number of samples11
Model 475 gaussmeter1NA
Model 776 matrix11
Keithley equipment 
6220 Current Source11
6485 Autoranging Digital Picoammeter11
2182A Digital Voltmeter11
MagnetEM4-HVAEM7-HVSuperconducting
Pole diameter102 mm (4 in)178 mm (7 in)NA
Pole face diameter102 mm (4 in)152 mm (6 in)76.2 mm (3 in)NA
Max magnetic field at room temperature1.3 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
Max magnetic field at variable temperature0.87 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 requirementsTap water or closed cycle cooling system (optional chiller available)Liquid helium
Inlet temperature25 °C (77 °F) maximum32 °C (90 °F) maximumNA
Pressure drop200 kPa (30 psi)220 kPa (32 psi)NA
Flow rate7.6 L (2 gal)/min11.4 L (3 gal)/minNA
Water chiller cooling capacity2.5 kW (8,530 BTU)/h5 kW (17,060 BTU)/hNA
Bipolar magnet power supply643648625
ModeDCDC
Maximum output±35 V ±70 A (2450 W)±75 V ±135 A (9.1 kW nominal)±5 V/±60 A (300 W)
AC line input204/208 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 rate5.7 L (1.5 gal)/min minimum7.6 L (2 gal)/minNA
Cooling water requirementsTap water or closed cycle cooling system (optional chiller available) +15 °C to +30 °CTap water or closed cooling system (optional chiller available) +15 °C to +30 °CAir cooled
ComputerDell® computer with HDD, CD-ROM, 19-inch SVGA flat screen monitor, Windows® OS, Hall software, and National Instruments IEEE-488 USB adaptor