Physics Lab Equipment

LEEI-42 Magnetic Hysteresis Loop & Magnetization Curve

LEEI-42 Magnetic Hysteresis Loop & Magnetization Curve


  • Rectangular specimen with small gap

  • Easy to use

  • Stable and reliable


Magnetic hysteresis loop and magnetization curve present the basic magnetic characteristics of magnetic materials. A large number of ferromagnetic materials with various properties have been applied in industry, transportation, communications, electricity and electronics, and other fields.


This experimental apparatus is designed with the following features:


1. Use of a high-precision digital Tesla meter for high measurement accuracy

2. Demagnetizing process at the time of measuring DC magnetic properties of materials

3. Measurement of magnetic field intensity distribution in a gap

4. Two different magnetic materials provided as specimens


Using this apparatus, the following experiments can be performed (an example of experimental result shown at left):


1. Acquire the relationship of magnetic induction intensity B and position X in a specimen using a digital Tesla meter

2. Measure the range of uniform magnetic field intensity along the X direction

3. Learn how to demagnetize a magnetic specimen, measure the start magnetization curve and magnetic hysteresis

4. Learn how to apply Ampere's circuit law in magnetic measurement

The instruction manual contains experimental configurations, principles, step-by-step instructions, and examples of experiment results. Please click Experiment Theory and Contents to find more information about this apparatus.

Note: A similar apparatus, LEAI-71, can measure both Hysteresis loop and Curie Temperature of ferrite materials.

Parts and Specifications

Constant current source4-1/2 digit, range: 0 ~ 600 mA, adjustable
Magnetic material specimens2 pcs (one die steel, one #45 steel), rectangular bar, section length: 2.00 cm; width: 2.00 cm; gap: 2.00 mm
Digital Teslameter4-1/2 digit, range: 0 ~ 2 T, resolution: 0.1 mT, with Hall probe

  LEEI-42 Magnetic Hysteresis Loop & Magnetization Curve.png

Schematic of experimental setup

(Click figure to enlarge)

 LEEI-42 Magnetic Hysteresis Loop & Magnetization Curve.png

An example of experimental result: Hysteresis & magnetization curve

(Click graph to enlarge)

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