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Magnets: Hot or Cold?

CSEF · 2008 Materials Science (Junior Division Only)

Brian W. Pinner · La Colina Junior High School, Santa Barbara, Santa Barbara County

Overview

Objectives/Goals My objective is to discover the effects (if any) of temperature on the strength of a magnet. Methods/Materials My method for testing this was to place a pure magnet at a variety of temperature zones for 1 hour and then sliding it towards a metal indicator to determine the magnetic strength by the distance the indicator jumped. My materials included a pure neodymium magnet, a magnetism meter created with a ruler, pvc pipe, and piece of framing on a wooden board together, a digital laser thermometer, and a metal indicator. Results My results showed that temperature can affect magnets in both positive and negative ways. If I heated up a magnet then it got weaker but if I cooled a magnet then the magnet's strength increased. Conclusions/Discussion I conclude that temperature does have an effect on magnets because it affects the tiny magnets fouund inside its electrons.

Summary statement

My project looks at the effects of temperature on the strength of a magnet.

Help received

Mr. Miles Stoudenmire helped me by answeing questions and my father helped me with my magnetism meter.

Competition history

  • CSEF 2008 Materials Science (Junior Division Only) · Entry J1232

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