Electrical Transport Properties Measurement System
The system considers issues that users often overlook, such as integration, shielding and anti-interference capabilities, test circuit and sample resistance range matching. Electrical measuring instruments from Keithley in the United States are selected. The magnetic field adopts electromagnets or liquid helium-free superconducting magnets according to user needs. It is equipped with a smart measuring sample rod and quick-plug sample card, plus fully automated special testing software, making the operation more user-friendly. , allowing users to quickly and conveniently conduct electrical transportation tests and obtain accurate and reliable data.
In addition, the DX-9000 series electrical transport property measurement system has a variety of high and low temperature environment options, which is a powerful tool for scientific researchers to study the electrical transport properties of materials.
Functions of electrical transport property measurement system
- Can measure the Hall effect, R-H characteristics, R-T characteristics and I-V characteristics (resistivity);
- Parameters can be derived: sheet resistance, resistivity, Hall coefficient, Hall mobility, carrier concentration and conductivity type;
- Curves can be drawn:
The above parameters change curve with temperature or magnetic field;
I-V characteristics - I-V characteristic curves under different magnetic fields and different temperatures;
R-H characteristics - fixed temperature, characteristic curve of resistance changing with magnetic field;
R-T characteristics - fixed magnetic field, characteristic curve of resistance changing with temperature.
Main Features
- Resistivity, Hall coefficient and Hall mobility tests comply with the American Society for Testing and Materials ASTM-F76 standards;
- Wide resistance measurement range: 100nΩ (low resistance option) ~ 100GΩ (high resistance system);
- The plug-in sample card is used to facilitate sample installation, and a four-probe card is provided, which eliminates the trouble of making electrodes to a certain extent;
- The standard system can measure 2 samples at the same time, and adding options can measure 4 samples at the same time;
- The measurement and calculation process is automatically executed by the software, and a Hall effect data can be obtained in 3 minutes;
- Provides a long-term and highly stable magnetic field, with 24-hour stability <±0.5G, and the magnetic field can smoothly cross zero;
- The electromagnet power supply has a built-in gauss meter, and the magnetic field can be controlled within 0.1G in just 20 seconds from 0 to 1kG;
- Select the temperature option to measure Hall effect and resistance at different temperatures.
Standard system
| Model | DX-9003 | DX-9005 | DX-9007 | |
| Physical parameters | Mobility | 1 ~ 1 × 105 cm2/vs | ||
| Carrier concentration | 6 × 1012 ~ 6 × 1021 cm-3 | |||
| Hall coefficient | ±1 × 10-3 ~ ±1 × 106 cm3/C | |||
| Resistivity | 5 × 10-7 ~ 5 × 102 Ω·cm | |||
| Electrical parameters | Resistance | 10mΩ ~ 10MΩ | ||
| Battery | ±50pA ~ ±1A(±1.05A @±21V, ±105mA @±210V) | |||
| Power source | ±5μV ~ ±200V(±21V @±1.05A, ±210V @±105mA) | |||
| Current measurement | ±10pA ~ ±1.05A (10pA is minimum resolution) | |||
| Voltage measurement | ±0.1μV ~ ±200V (0.1μV is minimum resolution) | |||
| Magnetic field environment | Room temperature magnetic field | 1T @10mm Spacing | 2.4T @10mm Spacing | 2.6T @10mm Spacing |
| Variable temperature magnetic field | 0.44T @ Liquid nitrogen cryostat | 1.7T @Liquid nitrogen cryostat | 2.0T @Liquid nitrogen cryostat | |
| 0.26T@cycle refrigerator | 1.1T@cycle refrigerator | 1.5T@cycle refrigerator | ||
| Temperature options | Single point liquid nitrogen box | 77K | ||
| Liquid nitrogen thermostat | 80K ~ 325K (standard type), 80 ~ 500K (high temperature type) | |||
| Circulation Refrigerator | 4K ~ 325K (4K type), 10K ~ 325K (10K type) | |||
| High temperature furnace | 325K ~ 1000K | |||
| Other | Maximum sample size | 10mm * 10mm * 3mm | 30mm * 30mm * 3mm | 50mm * 50mm * 3mm |
| Number of samples | 2 (expandable to 4 with additional options) | |||
| Covered area | 2m*1.5m | 5m*2m | 5m*2m | |
High sensitivity system
| Model | DX-9003HS | DX-9005HS | DX-9007HS | |
| Physical parameters | Mobility | 1 ~ 1 × 106 cm2/vs | ||
| Carrier concentration | 6 × 1012 ~ 6 × 1023 cm-3 | |||
| Hall coefficient | ±1 × 10-5 ~ ±1 × 106 cm3/C | |||
| Resistivity | 5 × 10-9 ~ 5 × 102 Ω·cm | |||
| Electrical parameters | Resistance | 0.1mΩ ~ 10mΩ | ||
| Low resistance | 100nΩ ~ 10mΩ | |||
| Battery | ±50pA ~ ±1A(±1.05A @±21V, ±105mA @±210V) | |||
| Power source | ±5μV ~ ±200V(±21V @±1.05A, ±210V @±105mA) | |||
| Current measurement | ±10pA ~ ±1.05A (10pA is minimum resolution) | |||
| Voltage measurement | ±1nV ~ ±100V (1nV is minimum resolution) | |||
| Magnetic field environment | Room temperature magnetic field | 1T @10mm Spacing | 2.4T @10mm Spacing | 2.6T @10mm Spacing |
| Variable temperature magnetic field | 0.44T @ Liquid nitrogen cryostat | 1.7T @Liquid nitrogen cryostat | 2.0T @Liquid nitrogen cryostat | |
| 0.26T@cycle refrigerator | 1.1T@cycle refrigerator | 1.5T@cycle refrigerator | ||
| Temperature options | Single point liquid nitrogen box | 77K | ||
| Liquid nitrogen thermostat | 80K ~ 325K (standard type), 80 ~ 500K (high temperature type) | |||
| Circulation Refrigerator | 4K ~ 325K (4K type), 10K ~ 325K (10K type) | |||
| High temperature furnace | 325K ~ 1000K | |||
| Other | Maximum sample size | 10mm * 10mm * 3mm | 30mm * 30mm * 3mm | 50mm * 50mm * 3mm |
| Number of samples | 1 | |||
| Covered area | 2m*1.5m | 5m*2m | 5m*2m | |
High resistance system
| Model | DX-9003HR | DX-9005HR | DX-9007HR | |
| Physical parameters | Mobility | 1 ~ 1 × 106 cm2/vs | ||
| Carrier concentration | 6 × 108 ~ 6 × 1023 cm-3 | |||
| Hall coefficient | ±1 × 10-5 ~ ±1 × 1010 cm3/C | |||
| Resistivity | 5 × 10-9 ~ 5 × 106 Ω·cm | |||
| Electrical parameters | Resistance | 0.1mΩ ~ 10GΩ | ||
| Low resistance | 100nΩ ~ 10mΩ | |||
| Battery | ±0.1pA ~ ±0.1A | |||
| Power source | - | |||
| Current measurement | ±10fA~±21mA (10fA is minimum resolution) | |||
| Voltage measurement | ±1nV ~ ±100V (1nV is minimum resolution) | |||
| Magnetic field environment | Room temperature magnetic field | 1T @10mm Spacing | 2.4T @10mm Spacing | 2.6T @10mm Spacing |
| Variable temperature magnetic field | 0.44T @ Liquid nitrogen cryostat | 1.7T @Liquid nitrogen cryostat | 2.0T @Liquid nitrogen cryostat | |
| 0.26T@cycle refrigerator | 1.1T@cycle refrigerator | 1.5T@cycle refrigerator | ||
| Temperature options | Single point liquid nitrogen box | 77K | ||
| Liquid nitrogen thermostat | 80K ~ 325K (standard type), 80 ~ 500K (high temperature type) | |||
| Circulation Refrigerator | 4K ~ 325K (4K type), 10K ~ 325K (10K type) | |||
| High temperature furnace | 325K ~ 1000K | |||
| Other | Maximum sample size | 10mm * 10mm * 3mm | 30mm * 30mm * 3mm | 50mm * 50mm * 3mm |
| Number of samples | 1 | |||
| Covered area | 2m*1.5m | 5m*2m | 5m*2m | |
Note: In the above three selection tables, under the assumption that the sample thickness is 100nm, the magnetic field size is 10,000 Gauss, and the correction coefficient is 1, the resistance test accuracy is 2%, and the resistivity, Hall coefficient, carrier concentration and mobility are The test accuracy is 5%.
Optional components
- Liquid helium-free superconducting magnetic field cryogenic platform: CFMS series produced by the British Cryogenic Company, with a magnetic field range of 5T~18T and a temperature range of 1.6K~400K;
- Temperature options: liquid nitrogen box, liquid nitrogen thermostat, closed cycle thermostat, high temperature furnace;
- Optical options: polar head pole and light shielding box with optical path;
- Other options: rotating mechanism, vacuum pump, circulating water cooling unit.
