Tyler+and+Tom

T 'n' T

Ferromagnetism & Denaturation

Abstract:

The purpose is to determine the point of which different magnets with different Curie temperatures begin to denature and by how much they denature. We used a mantel to heat, at max temperatures between one-hundred and forty degrees Celsius to two-hundred degrees Celsius, an AlNiCo magnet, a Nickel magnet, a Hematite magnet, and a Neodymium magnet. The results we received showed a definite point of where the magnet would start to denature. The graphs showed that there was a small slope. It is good to know the slope and point of when these magnets denature for use in future technologies and other uses. Magnets have been used for many things including construction and compasses. Magnetic field is the measurement of how much the magnet can pull. Curie point is the temperature a magnet is completely denatured, usually at very high temperatures. Mantel is a round heating device that can heat to very high temperatures. Ferromagnetism is the idea that explains how things are magnetic. Hematite is also known as Iron III Oxide. Further research includes: Finding out what went wrong with the Hematite magnet and if different Curie Temperatures make different magnets decrease at a different rate.
 * The Effect of Heat on Magnets and the Point of Denaturing. **
 * Tyler White. Tommy Evans **

Purpose: We will try to determine the different points at which various magnetic materials begin to denature, and then attempt to find the reason why certain magnets have higher/lower denaturing points.

Hypothesis: The resulting graph of heat to magnetism will not be a linear negative sloped graph, rather it will not be linear.



1. Complete apparatus, put the magnet in the mantel and attach the probe above the mantel. 2. Turn on the Mantel to level 4, (which correlates to about 155 degrees Celsius), and leave the magnet in for 10 minutes. 3. Let the probe record in logger pro. 4. Turn off the mantel and remove the magnet. 5. Repeat the steps until all magnets are used.

1 Square AlNiCo magnet from [] 2 Oval hematite (Iron III oxide) magnet [] Cylindrical neodymium magnet [] A mantel. A magnetic field sensor. A stand. A cooking thermometer.
 * Materials**

Do not touch hot metal. Do not stick your body parts in a oven. Do not be near magnets with a pacemaker or other sensitive equipment.

Curie temperatures are in K

Curie Point for all the elements in the Periodic Table. (n.d.). //The Photographic Periodic Table of the Elements //. Retrieved January 9, 2012, from http://periodictable.com/Properties/A/CuriePoint.html

This is the best graph we got.

Here are the results of similar experiments. (n.d.). // Low energy spin dynamic of rare earth magnets //. [Web Photo]. Retrieved from http://images.iop.org/objects/jio/labtalk/3/2/1/figure.jpg

(n.d.). // Strength of magnet relative to temperature //. [Web Photo]. Retrieved from http://www.all-science-fair-projects.com/projectpics/00398/b1.gif



Audio File media type="file" key="Science Lab Magnetic Audio.wav" width="300" height="50"

(n.d.). // the effect of heating on the magnetism of metal clusters //. [Web Photo]. Retrieved from http://ej.iop.org/images/0295-5075/76/6/1088/Full/img55.gif

"Magnetic Field Sensor > Vernier Software & Technology." //Vernier Software & Technology//. N.p., n.d. Web. 5 Mar. 2012. .

"Ferromagnetism - Wikipedia, the free encyclopedia." //Wikipedia, the free encyclopedia//. N.p., n.d. Web. 6 Mar. 2012. 