JH60B-High Magnetic Field Hall Effect Test System
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JH60B-High Magnetic Field Hall Effect Test System
Product Description:
The instrument system consists of: electromagnet, electromagnet power supply, high precision constant current source high precision voltmeter, Gauss meter, Hall effect sample holder, standard sample, system software. The JH10 effector specially developed for this instrument system integrates a constant current source, a six-and-a-half-digit microvoltmeter and a complex switching relay-switch for Hall measurement, which greatly simplifies the connection and operation of the experiment. JH10 can be used alone as a constant current source and a microvoltmeter. It is used to measure important parameters such as carrier concentration, mobility, resistivity, and Hall coefficient of semiconductor materials, and these parameters must be controlled in advance to understand the electrical properties of semiconductor materials. Therefore, the Hall effect test system is to understand and study semiconductor devices. and the necessary tools for the electrical properties of semiconductor materials. The experimental results are automatically calculated by the software, and the Bulk Carrier Concentration, Sheet Carrier Concentration, Mobility, Resistivity, and Hall Coefficient can be obtained at the same time. ), magnetoresistance, etc.
Only the main technical indicators of the system are listed here.
Semiconductor materials: SiGe, SiC, InAs, InGaAs, InP, AlGaAs, HgCdTe and ferrite materials;
High-resistance materials: semi-insulating GaAs, GaN, CdTe, etc.
* Magnetic field: 10mm spacing is 2T, 20mm spacing is 1.3T
* Sample current: 0.05uA~50mA (adjust 0.1nA)
* With the Gauss meter or data acquisition board can communicate with computer
* I-V curve and I-R curve measurement, etc.
* Change curve of parameters such as Hall coefficient and carrier concentration
* Resistivity range：5*10-5～5*102Ω.cm
* Resistance range：10 m Ohms~ 6MOhms
* carrier concentration：5*1012～51*1020cm-3
*Hall coefficient：±1*10-2～±1*106cm3/C
* mobility：0.1~108 cm 2 /volt*sec
*Fully automated testing, one-click processing
The maximum magnetic field is 20000Gs when the distance between N and S is 10mm;
Maximum 13000 Gauss when N, S spacing is 20mm;
The maximum magnetic field is 10000 Gauss when the distance between N and S is 30mm;
Uniformity area: 10mm diameter uniformity range at 60mm spacing; 1%
Self-weight 210 kg; with stand and wheels
Resolution: 0.01mT Range: 0-3T
Rs-232 interface data reading software with GF-80 probe
② The current can smoothly cross the zero point, non-switching commutation
③ Four-quadrant operation of output current and voltage (suitable for inductive loads)
※ High current stability and low ripple
①Current stability: better than ±25ppm/h (standard type); better than ±5ppm/h (high stability type)
② Current accuracy: ±(0.01% set value + 1mA)
③ Current resolution: 20 bits, for example, 15A power supply, the current resolution is 0.03mA
⑤ Load effect: ≤ 2.0×10-5 F.S. (when the load changes by 10%, the output current changes)
⑥ Current ripple (RMS): less than 1mA
Sample holder fixture (customized upon request);
Constant current source and test table:
Constant current source range: ±50nA-±50mA;
Resolution 0.1nA continuously adjustable within the range;
High-precision voltage data acquisition instrument range 0. 1uV-30V
