Permanent Magnet Hall Effect Meter

The DX-30 Permanent Magnet Hall Effect Testing System consists of a permanent magnet, a high-precision constant current source, a high-precision voltmeter, a Hall effect sample holder, standard samples, a high-precision gaussmeter, and system software. Specifically developed for this instrument system, the DX-320 Effect Meter integrates the constant current source, a six and a half digit microvolt meter, and a Hall measurement complex switching relay-switch assembly, greatly simplifying experiment wiring and operation. The DX-320 can be used independently as a constant current source or microvolt meter. It is used to measure important parameters of semiconductor materials such as carrier concentration, mobility, resistivity, Hall coefficient, etc., which are essential for understanding the electrical properties of semiconductor materials and devices. The experimental results are automatically calculated by the software, providing simultaneous measurements of bulk carrier concentration, sheet carrier concentration, mobility, resistivity, Hall coefficient, magnetoresistance, etc.

We can provide various Hall effect test systems for teaching and research;
It is the largest manufacturer of high-precision Hall devices in China;
Technical support: Institute of Semiconductors, Chinese Academy of Sciences (Hall effect research for 30 years).

DX-30 Hall Effect Measurement System Constituent parts

DX-30 Permanent Magnet

1.Both ends are high-stability permanent magnets, and the magnetic field value is around 500mT (the specific value is subject to actual measurement);
2. The distance between the pole heads of the two permanent magnets is: 18mm, the pole diameter is: 48mm, and the pole surface diameter is: 33mm;
3. The permanent magnet is a nuclear magnetic resonance NMR series permanent magnet; it has good stability and a very uniform magnetic field, ensuring that the uniformity of the uniform area is 1~5*10-5;
4. Permanent magnets with relevant magnetic sizes can be customized according to customer needs to cooperate with Hall effect testing experiments.

DX-320 Sample constant current source

The DX-320 effect meter specially developed for this instrument system assembles a constant current source and a switch (a six-and-a-half microvoltmeter and a Hall-complex switching relay) into one. Greatly reduced the connection and operation of the experiment. The DX-320 can be used alone as a constant stream and a microvolt.

1. The basic resolution of current output is 0.0001uA, and the basic resolution of voltage measurement is 0.0001mV;
2. Output range: 50.00nA-50.00mA, the middle can be continuously adjusted in steps of 0.1nA;
3. Measurement voltage: 0~±3V, a wide range of test voltages that meet the test of high-resistance chips;
4. Built-in automatic conversion four-phase array card, which can realize automatic measurement of the Hall effect Vanderbilt method;
5. Good human-computer interaction interface, convenient for users to make manual adjustments;
6. Complete host computer instructions can communicate with the computer to complete various operations.

DX-30 Sample Stage

1.One-click automated measurement can be realized. After the test starts, the tester must follow the program prompts to reverse the polarity of the permanent magnet before measurement;
2. Set the parameters of relevant test samples in the software, and realize automatic calculation of each parameter after the test is completed;
3. I-V curves and B-V curves can be performed in the software;
4. The modular design within the software makes it convenient for customers to use and develop related functions;
5. After the experimental result measurement is completed, the data will be temporarily saved in the software. If long-term storage is required, the data can be exported to an EXCEL table to facilitate later data processing.

Supporting instrument

1.The permanent magnet fixing device allows the magnet to be fixed in the same position every time;
2. Provide Hall effect standard test samples and data from the Institute of Semiconductors, Chinese Academy of Sciences: 1 set;
3. Corresponding tools for making ohmic contact solder joints on samples: soldering iron, indium sheet, solder, enameled wire, etc.;
4. 232 to USB serial port cable to realize communication between the test instrument and the host computer software.

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