DX-70 HMS Hall Measurement System
DX-70 Hall Effect Measurement System
Product Introduction
DX-70 Hall Effect measurement system consists of an electromagnet, electromagnet power supply, high-precision constant current source, high-precision voltmeter, matrix card, Hall effect sample holder, standard sample, and system software.
This HMS system test uses the latest KEITHLEY imported test source meter, combined with the matching low-latency and high-bandwidth matrix card, which greatly improves the range and accuracy of the sample's power supply current and the test sample's Hall voltage. The wide current power supply and The wide voltage test range can cover most of the semiconductor devices on the market.
The experimental results are automatically calculated by the software, and parameters such as Bulk Carrier Concentration, Sheet Carrier Concentration, Mobility, Resistivity, Hall Coefficient, and Magnetoresistance can be obtained at the same time.
Parameters of DX-70 Hall measurement system:
| Physical parameters |
Carrier concentration |
10³cm⁻³ - 10²³cm⁻³ |
| Mobility | 0 .1 cm²/ volt*sec - 10⁸cm²/ volt*sec | |
|
Resistivity range |
10⁻⁷ Ohm*cm - 10¹² Ohm*cm | |
| Hall voltage | 1 uV - 3V | |
|
Hall coefficient |
10⁻⁵ - 10²⁷cm³/ C | |
| Testable material type | Semiconductor material | SiGe, SiC, InAs, InGaAs, InP,AlGaAs, HgCdTe and ferrite materials etc. |
| low resistance material | Graphene, metals, transparent oxides, weakly magnetic semiconductor materials, TMR materials, etc. | |
| high resistance material | Semi-insulating GaAs, GaN, CdTe, etc. | |
| Material Conductive Particles | Type P and Type N testing of materials | |
| Magnetic field environment | Magnet Type | Variable electromagnet |
| Magnitude of magnetic field | 1070mT (The pole pitch is 10mm) 687mT (The pole pitch is 20mm) 500mT (The pole pitch is 30mm) 378mT (The pole pitch is 40mm) 293mT (The pole pitch is 50mm) |
|
| Uniform area | 1% | |
| Optional magnetic environment | The electromagnet of relevant magnetic size can be customized according to the needs of customers | |
| Electrical parameters | Current source | ±0.1nA- ±1000mA |
| Current source resolution | 0.001uA | |
| Measuring voltage | ±10nV ~ ±200V | |
| Voltage measurement resolution | 0.0001 mV | |
| Other Accessories | Shading | Extern ally installed light-shielding parts to make the test material more stable |
| Sample size | Maximum 30mm * 30mm | |
| Box cabinet | 600*600*1000mm | |
| Test piece | Hall effect of Institute of Semiconductors, Chinese Academy of Sciences Standard test samples and data: 1 set (Si, Ge, GaAs, lnSb) |
|
| Making ohmic contacts | Electric soldering iron, indium chip, solder, enameled wire, etc. | |
| One-button automatic measurement can be performed without the need for human operation after the test is started | ||
| The software can perform I-V curve and BV curve | ||
| Set in software for automatic temperature measurement | ||
| The experimental results are measured, and 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. | ||
| Provide the Hall effect standard test samples and data of the Institute of Semiconductors, Chinese Academy of Sciences: 1 set | ||
Testable samples of the HMS system:
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