Hall Effect Test System

The Hall effect is a kind of electromagnetic effect. When the current passes through the conductor perpendicular to the external magnetic field, an additional electric field is generated perpendicular to the direction of the current and the magnetic field, thereby generating a potential difference at both ends of the conductor. This phenomenon is the Hall effect, and this potential difference is also called the Hall potential difference.

Sample Requirements

• The sample is limited to the block, and the powder needs to be pressed into tablets.
• For block samples, please indicate the thickness of the conductive layer.
• The size of the sample (RT - 400 K) needs to meet: 5 mm < length < 10 mm, 5 mm < width < 10 mm, 0.3 mm < thickness < 2 mm.
• The size of the sample (RT - 800 K) needs to meet: side length or radius of 10-15 mm, thickness less than 0.5 mm.
• If the sample has a substrate, the substrate must not be conductive.

Application

• For studying the electrical properties of semiconductor materials / optoelectronic materials
• For measuring the carrier concentration, mobility, resistivity, Hall coefficient and carrier type of materials under different temperatures and magnetic fields

Instrument and Result Display

FAQ

Q1. How to test the Hall effect?

A. Vanderbilt method.

Q2. In what range of resistance is it better to test the Hall effect?

A. 10^-5 to 10⁶ Ω.

Q3. The relationship between Hall coefficient and other parameters?

A. The conductivity type of the sample can be judged by the sign of the Hall coefficient RH (or the sign of the Hall voltage): if VH < 0, the RH is negative, and the sample belongs to the N-type semiconductor, otherwise it is the P-type semiconductor.

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For more information about our Hall effect test system testing services, please contact us.