L79/HCS – Hall Effect Measurement System
Characterization of semiconductor devices
The L79/HCS System permits the characterization of semiconductor devices, it measures: mobility, resistivity, charge carrier concentration and Hall constant.
The roughed desktop setup offers different sample holders for various geometries and temperature requirements. An optional low temperature (LN2) attachment and a high temperature version up to 800°C ensure that all fields of application can be covered. Different permanent and electric magnets provide fixed or variable magnetic fields up to several Tesla.
The sample holder handle closes the measurement chamber vacuum tight. The measurement chamber is provided with a gas in and outlet, so measurements can be taken under controlled and changeable atmospheres. Different sample holders are available to take measurements from LN2 up to 800°C.
Optionally the actual magnetic field strength can be measured up to 150°C. During a measurement the sample does not have to be moved, as the two magnetic circuits assembled on a sledge can be moved to change the magnetic flux from positive to zero and negative.
- Resistivity and Conductivity
- Hall Constant and Mobility
- Charge Carrier Concentration
- High Temperature Hall measurement
- Easy Handling
- Integrated device
|Temperature range:||From LN2 up to 800°C in different configurations|
|Input current:||5nA up to 125 mA|
|Hall tension:||1 µV up to 2500 µV|
|Digital resolution:||300 pV|
|Sample geometry:||From 5 x 5 mm to 25 x 25 mm and up to 5 mm height|
|Magnetic field:||Basic: Permanent magnet with up to 0.7 T
Pole diameter 90 mm
Two magnet setup for bipolar measurement.
Alt.: Electromagnet up to 1 T (variable field).
Pole diameter up to 76 mm.
Power supply 75A / 40V.
Current reversal switch for bipolar measurement
|Sensors:||different exchangeable sensor configurations available|
|Resistivity range:||10-4 up to 107 (Ohm/cm)|
|Carrier density:||107 up to 1021 (1/cm3)|
|Mobility range:||1 up to 107 (cm2/Volt sec)||Repeatability & Accuracy||[/trow]|
|Electrical Resistivity:||± 3% (for most materials)
± 6% (for most materials)
|Hall Constant:||± 5% (for most materials)
± 6% (for most materials)
|Atmospheres:||Vacuum, inert, oxidizing, reducing|
Extend your capabilities
- Multiple sensors available for different
- sample size.
- temperature range.
- Permanent- or Electromagnet available.
- Quench cooling add-on for measurements at 80K.
- KREG and Dewar for controlled LN2 cooling.
- Motorized linear stage for automatized measurements.
- Gas in- and outlet for defined atmospheres.