Curie Point of Nickel

Type of activity: demo
Activity code:  M-001

Description:

1. Place magnet in Pyrex test tube filled with cold water. 
2. Adjust the nickel plate so it is attracted to the bottom of the test tube. 
3. Nickel plate should fall away freely if the magnet is removed. 
4. Place the alcohol flame directly underneath the nickel plate. 

Method:
1. Light alcohol lamp and observe nickel plate attracted to magnet. 
2. After 45 to 60 seconds of heating nickel, plate will swing away from magnet as it passes through Curie temperature. 
3. Once it cools the plate will re-attach itself to bar magnet and process will continue again.

Apparatus

Alcohol Lamp
Round Magnet
Test Tube (glass)
Test Tube (glass)
Retort Stand
Retort Stand
Nickel Foil
String
String
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