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what is an affordable powerful superconductor?
I need to use a superconductor in my science fair project and was wondering if there are any better than: yttrium barium copper oxide. I need one thats not too expensive, I can find, and can be sufficiently cooled using liquid nitrogen.
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I think “powerful” won’t enter into it – you’re almost certainly stuck with “cheapest obtainable stuff that goes superconducting at liquid nitro temperatures”. You’ll probably have a hard time doing better than yttrium barium copper.
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LikeDislikeFine silver is the best conductor at “room” temperature. Fine silver cooled with liquid nitrogen should be as close to a super-conductor as you wil find outside of liquid-helium cooled materials. I do not know how much you need – but silver is not all that expensive and is very easily handled.
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LikeDislikeDepends on what you want to use it for. There are inexpensive kits available to demonstrate the levitation of a permanent magnet by a superconductor. The kit is a small disk of YBaCuO, size of a quarter, and a smaller NdFeB magnet, the size of a BB. Place the magnet on the disk in a shallow pan, bottom of a styrofoam cups works fine, then LN2 makes the YBaCuO superconducting and the magnet levitates. google superconducting magnet levitation and you might find someone who sells such things. good luck
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