A higher level evaluation for various kinds of materials has been required along with the development of thermoelectric materials. This system “Seebeck Coefficient / Electric Resistance Measuring System ZEM-5 series” is specialized in the features of various kinds of materials such as high temperature, high resistance and thin film, etc. and a performance evaluation system to correspond to various kinds of needs.
Applications
Evaluate the thermoelectric properties of a wide variety of materials including semiconductors, ceramics, and metalsFeatures
- A series corresponding to special specifications for the characteristics of various thermoelectric materials and thin films
- A type C thermocouple is used for the temperature detection sensor, making this system optimal for evaluating Si-based thermoelectric materials (SiGe, MgSi, others) (model HT)
- V/I plot that self-diagnoses the ohmic contact is standard
- Measurement of high temperature up to 1200°C (model HT)
- Measurement of high resistance of maximum 10 MΩ (model HR)
- Measurement of materials formed as a film on substrates (model TF)
- Measurement of low temperature from -150°C to 200°C (model LT)
A patent and a standard
Thermoelectric power JIS R 1650-1
Resistivity JIS R 1650-2
Specifications
| Model | ZEM-5HT | ZEM-5HR | ZEM-5LT | ZEM-5TF |
|---|---|---|---|---|
| Features | High temperature | High resistance | Low and middle temperature | Thin film |
| Temperature Range | 100ºC～1200ºC | 100ºC～800ºC | -150ºC～200ºC | 50ºC～500ºC |
| Sample Size | 2 to 4 mm square or φ2 to 4 mm x 3 to 15 mm length | Deposited substrate:2 to 4 mm width x 0.4 to 1.2 mm thickness mm x 20 mm length Thin film thickness: nm scale or thicker *An insulation layer is required between the sample film and the substrate |
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| Thermocouple | C | R | K | R |
| Measurement accuracy | Seebeck coefficient: ±7% Electric resistivity: ±7% (less than 5mm long sample is not eligible.) |
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Constitution
- Sample measurement, control and measurement assy. 1 set
- Data acquisition. 1 set
- Atmosphere controller. 1 set
Utility(HT type)
| Power | Main body AC200V, 40A 1 location PC AC100V, 10A 2 locations |
|---|---|
| Cooling water | Water pressure 0.15 MPa Flow rate 5L/min |
| Atmosphere gas | Low pressure He gas 0.2 MPa (Low pressure and static atmosphere) |
| Space requirement | Approx.750mmW × 900mmD (Installed on table) |
Seebeck coefficient calculation method
Seebeck coefficient measurement shall be done by changing 3 temperature gradients and dividing dark electromotive force.
Setting and measurement screen
