MAGNET CHARACTERISATION

	INTRODUCTION
	OPEN + CLOSE LOOP EFFECT
	EDDY CURRENTS
	COMPARISON OF TECHNOLOGY USED IN MEASURING MAGNET CHARACTERISTICS

Eddy Currents

When a changing magnetic field strength is applied to any electrically conductive material, eddy currents will be generated. These eddy currents will in turn, generate magnetic fields of their own. Care must be taken in magnetic measurement to avoid or remove these effects.

Hirst Magnetic Instruments Ltd. have been been granted international patents for a process known as F2F which mathmatically measures cd removes eddy current effects for Pulsed Field Magnetometry measurements.

Next > Comparison of Technologies used in Measuring Magnet Characteristics
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MAGNET CHARACTERISATION TECHNOLOGY COMPARISION TABLE

Click here to view the magnet characterisation comparison table.

The comparision table highlights at a glance the features of each technology used in the measurement of magnet sample characteristics

MAGNET CHARACTERISATION TECHNOLOGIES

Pulsed Field Magnetometry (PFM)

Pulsed Field Magnetometers apply a “pulse” of magnetic field to generate the applied magnetic field. This has the advantage that the field can be strong enough to saturate any magnetic material.

Vibrating Sample Magnetometry (VSM)

Vibrating Sample Magnetometers vibrate the sample as part of the measurement process. This provides the Fluxmeter element of the system with the dynamic component it requires to make the measurement. The applied field is changed so at each measurement point the field is static and hence no eddy currents to cause problems.

Permeameter Technology

Permeameters use a closed loop form of magnetic measurement.

MAGNET CHARACTERISATION TECHNOLOGY COMPARISION TABLE

The comparision table highlights at a glance the features of each technology used in the measurement of magnet sample characteristics