TESTIK-9B Series Electrical Transport Property Measurement System (High Sensitivity)|SeeweTek | Magnetic Field Generators, Magnetic Testing Solutions, Physical Property Testing Solutions

Product Parameters

Optional Accessories

• The electrical transport properties of materials at different temperatures are widely studied. Four temperature environments are available.
• 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. It can cool down to 80K in 15 minutes, is compact 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 stages and vacuum shrouds are suitable for various testing environments, such as electrical, optical, or both.
• High-Temperature Furnace: Our company has independently developed a high-temperature furnace (325K~1000K) for electrical transport systems. It uses radiation heating for uniform temperature distribution and has 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 with Light Path: A hole is drilled in the electromagnet pole piece as a light path, allowing light to shine perpendicularly on the sample even when the sample is perpendicular to the magnetic field.
• Light-Shielding Box: At room temperature, if the sample is sensitive to ambient light, a light-shielding 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 rotating 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, making a vacuum pump necessary. Our company offers a series of products including dry pumps, mechanical pumps, and molecular pump sets to meet the needs of various low-temperature options in electrical transport systems. Recirculating Chiller: Used for cooling equipment in magnetic field and low-temperature platforms.

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 under different magnetic fields and temperatures;

R-H characteristics—resistance variation with magnetic field at a fixed temperature;

R-T characteristics—resistance variation with temperature at a fixed magnetic field;