Technical Specifications
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Transient Signal Technologies
advanced materials metrology
Electrical Conductivity Modules
HC600 Hall Effect and van der Pauw Controller
The HC600 Hall Effect and van der Pauw Controller is offered as an advanced solution for electrical conductivity measurements. It supports a broad resistance range, accommodating various semiconductor samples from just a few Ohms to hundreds of GOhms. The four-probe van der Pauw method is employed for precise measurements of sheet resistance, resistivity, and electrical conductivity.
When integrated into a Seebeck effect measurement system, the HC600 enables a future upgrade to a full Hall effect system by simply adding an electromagnet or a permanent magnet. This capability can be a key factor in advancing future studies of thermoelectric materials.
The module is supplied with the Transient Signal Technologies software suite, providing advanced data acquisition capabilities and the ability to generate reports in various formats.
DMM6500 Keithley Digital Multimeter
The module with the DMM6500 digital multimeter is suggested as an alternative to the HC600 module. Electrical conductivity measurements can be performed using standard two-probe or four-probe techniques (van der Pauw measurements are not supported). This option is considered the most cost-effective choice.
The module is supplied with the LabVIEW-based Transient Signal Technologies software package.
Another advantage of including the DMM6500 multimeter in a Seebeck system - either alongside the HC600 module or as a standalone DMM6500 module - is the ability to visualize Seebeck voltages as a function of time when a heat pulse is applied to the sample and a temperature gradient is created. By adding additional electrical connections inside the Seebeck cryostat, in-situ monitoring of Seebeck voltages becomes possible.
This capability makes Seebeck experiments more advanced and enables quick, informed decisions on key experimental parameters such as heat pulse power, pulse duration, and operational delays. Proper adjustment of these parameters is essential for achieving the desired temperature gradients across the sample at various measurement temperatures, ultimately helping researchers efficiently optimize their experiments.
User's Manuals
Model HC600 Operator's Manual
Model DMM6500 Operator's Manual