Programmable Hall Effect Measurement System
& MagnetoResistance (MR) Measurement
Hall Effect / MagnetoResistance (MR) Measurement Techniques:
Electrical measurements under the magnetic field are an important way to understand the basic characteristics of the semiconductor and magnetic devices. By means of measuring the basic parameters such as voltage, resistance … etc., the charge transport properties of semiconductors and magnetic devices can be understood. For example: In the case for a current-carrying semiconductor in a magnetic field, by measuring the voltage at the semiconductor edges, we can know the parameters such as +/- charge, concentration, mobility of the carriers. In the other case for a current-carrying magnetic device under the sweeping magnetic field, by measuring the resistance, we can know the spin transport properties and the magnetization processes of the spintronic devices.
Technical Description:
WEISTRON Programmable Hall Effect Measurement System ( also MagnetoResistance Measurement System ) can measure the Hall voltage or magnetoresistance of nano devices /magnetic thin films under various magnetic fields by the programmable 4-probe measurements in sequence from arbitrary four electrodes out of customized number of electrodes. The optional gold electrode chips and probe stages can be incorporated into our systems. WEISTRON Programmable Hall Effect Measurement System are suitable for testing in the semiconductor industry and research laboratories.
System Description ( Model: MR1100 ):
1. Magnetic Field System
1-1. Electromagnet ( Magnetic field is higher than 1T as gap of iron cores is less than 20 mm )
1-2. Power Supply ( 1500 Watts )
1-3. Embedded Gauss Meter ( Range : 30k Gauss to 1 Gauss )
2. Probe Station System
2-1. Sample Holder and Probe Stage 4 pins (or 16 pins for option)
2-2. Programmable 4-probe measurements in sequence from arbitrary 4 electrodes out of customized number of electrodes (4 ~ 16-pins default) (optional)
3. Control System
3-1. Built-in computer systems (with Microsoft Windows)
3-2. Built-in Software Interface for Collecting and Analyzing Data
3-3. Built-in Data Acquisition System
★ 6-1/2 digit resolution
★ Highest sampling rate=2000 points per second (4-1/2 digit resolution)
★ Highest measured resistance up to 100 MΩ
★ Minimum measured resistance (suggested) = 100 mΩ
★ 5 PLC measurement rate @ 6-1/2 digits, 0.0005 PLC measurement rate @ 4-1/2 digits
3-4. Programmable four probe measurements for different electrode sets in sequence
4. Others
4-1. LCD Monitor
4-2. Keyboard and Mouse
Model List of Programmable Hall Effect Measurement System:
WEISTRON Programmable Hall Effect Measurement System Test Report (Model: MR1100) :
Test Sample: NiFe nanowire /thickness 40 nm / line width 100 nm
