Paramagnetism And Diamagnetism

Purpose

To demonstrate paramagnetic and diamagnetic materials.◙
 

Equipment

Suspended samples of bismuth and copper sulfate on stand with horseshoe magnet.◙

 

Setup Time

5 min.
 

    Images

    j7-11

    Description

    A sample of copper sulfate, a paramagnetic material, is slightly attracted to a magnet. A sample of bismuth, a diamagnetic material, is slightly repelled by a magnet. Samples of copper sulfate and bismuth are balanced on a light dowel rod hanging by a strip of plastic audio recording tape. The 2-kilogauss horseshoe magnet is used to push and/or pull the samples around, illustrating the small paramagnetic and diamagnetic forces.