Measurement Definitions
- The contacts are numbered from 1 to 4 in a counter-clockwise order, beginning at the top-left contact.
- The current I12 is a positive DC current injected into contact 1 and taken out of contact 2, and is measured in amperes (A).
- The voltage V34 is a DC voltage measured between contacts 3 and 4 with no externally applied magnetic field, measured in volts (V).
- The resistivity ρ is measured in ohms⋅metres (Ω⋅m).
- The thickness of the sample t is measured in metres (m).
- The sheet resistance RS is measured in ohms (Ω).
Read more about this topic: Van Der Pauw Method
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