TESTIK-9A Series Electrical Transport Property Measurement System|SeeweTek | Magnetic Field Generators, Magnetic Testing Solutions, Physical Property Testing Solutions

Optional Accessories

• The electrical transport properties of materials at different temperatures are being widely studied. We offer four temperature environments.
• LN2 Dewar: Samples can be directly immersed in liquid nitrogen (77K) for electrical transport testing.
• LN2 Cryostat: For detailed study of variable temperature properties (80K~500K), an LN2 cryostat can be selected. The LN2 cryostat can cool down to 80K in 15 minutes, is lightweight and easy to use, and a high-temperature version is available.
• Closed-Cycle Cryostat: For detailed study of variable temperature properties (2.8K~325K), a closed-cycle cryostat can be selected. Using Sumitomo compressor and cold head from Japan, the minimum temperature can reach 2.8K. Different sample holders and vacuum shrouds are suitable for different testing environments, such as electrical, optical, or both.
• High Temperature Furnace: We have also independently developed a high temperature furnace (325K~1000K) for the electrical transport system. It uses radiation heating for uniform temperature distribution, with four individually adjustable probes for reliable contact. It is typically used for high-temperature Hall effect studies.
• In electrical transport measurements, some materials yield different parameters under different wavelengths of light. This requires introducing light into the magnetic field or low-temperature environment.
• Pole Piece and Pole Cap with Light Path: A hole is drilled in the electromagnet pole cap as a light path, allowing light to shine perpendicularly on the sample even when the sample is perpendicular to the magnetic field.
• Light Shield Box: At room temperature, if the sample is sensitive to ambient light, a light shield box option is recommended. At low temperatures, the vacuum shroud of the cryostat itself provides light shielding.
• Rotation: At room temperature, the standard sample rod can be manually rotated. For precise measurement of anisotropy in magnetoresistive materials, a motorized rotation sample rod can be selected. At low temperatures, the temperature option can be fixed, and the electromagnet can be rotated to achieve a rotating magnetic field environment.
• Vacuum Pump: Cryostats generally require a vacuum environment to achieve high and low temperatures, so a vacuum pump is essential. We offer a series of products including dry pumps, mechanical pumps, and molecular pump sets to meet the needs of various low-temperature options in the electrical transport system. Circulating Water Chiller: Used for cooling equipment in the magnetic field platform and low-temperature platform.

Software Introduction

• Capable of measuring Hall effect, R-H characteristics, R-T characteristics, and I-V characteristics;
• Parameters obtainable: sheet resistance, resistivity, Hall coefficient, Hall mobility, carrier concentration, and conduction type;
• Can plot curves of the above parameters as functions of temperature or magnetic field, as well as

I-V characteristics—I-V characteristic curves at different magnetic fields and temperatures;

R-H characteristics—resistance versus magnetic field curves at fixed temperature;

R-T characteristics—resistance versus temperature curves at fixed magnetic field;