New Alloy Becomes Magnetic on Heating

New Alloy Becomes Magnetic on Heating
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This video is short, and really pretty boring if you don’t know what’s going on. Shown is a chunk of new alloy (Ni45Co5Mn40Sn10) that undergoes a phase change, at about 125C, from a nonmagnetic material to one that is strongly magnetic. If you bias the system with an additional, permanent magnet, heating the system past the transition temperature produces an electric current in a nearby coil, thereby converting heat to electricity. The alloy was produced by Vijay Srivastava, Yintao Song, Kanwal Bhatti, and R. D. James at the University of Minnesota and recently published in Advanced Energy Materials. [via adafruit]

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I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.

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