Where to buy yttrium barium copper oxide

Onnes had the whole field of low-temperature cryogenics open to him. In he discovered that, at 4. Not just dropped a lot, but to nothing.

The significance of this result did not escape Onnes, and its potential applications have been the dreams of physicists and chemists ever since. Efficient power transmission, endless energy storage, extremely powerful magnets and electric motors are just some of the possibilities.

But they remained dreams for a long time. Researchers tested all sorts of metals and alloys, and many of them did superconduct — but only at such low temperatures as to be basically impractical. That was until the mids, some 70 years after Onnes. OK, so still not very useful, but a huge leap over the previous best.

The race was on. Labs across the world started to throw different metals into the mix with the crucial copper oxide, and the critical temperature crept up and up. Enter YBCO. This mixture of yttrium, barium, copper and oxygen can be teased into forming a compound with a critical temperature of 93K. And nitrogen is a lot cheaper than helium.

Superconductivity was now within reach of the masses. And YBCO is very straight-forward to make — I even managed to make some that superconducted when I was an undergraduate, back in the last century. All you need to do is grind together yttrium oxide, barium carbonate and copper oxide so that you have a 1 to 2 to 3 ratio of yttrium to barium to copper.

Because the carbon from the barium carbonate leaves the mixture as carbon dioxide, you lose some oxygen atoms. Letting the sample cool slowly inside the furnace allows extra oxygen from the atmosphere to creep back in. Its structure comprises sheets of copper and oxygen atoms, as do all the cuprate superconductors, interleaved with sheets of barium oxide and yttrium atoms.

The unit cell actually has space for nine oxygen atoms, but you end up with around seven of them and a few gaps. Keep your current shopping and add the saved Cart? Remove your current shopping cart and replace with the saved cart? Add the items to your existing shopping cart? Replace your shopping cart with these items? Cookies disclaimer I agree Our site saves small pieces of text information cookies on your device in order to deliver better content and for statistical purposes.

Rate your overall satisfaction with our website? Would you recommend Alfa Aesar to a colleague? Symptoms of systemic copper poisoning may include capillary damage, headache, cold sweat, weak pulse, kidney and liver damage, central nervous system excitation followed by depression, jaundice, convulsions, paralysis, and coma.

Death may occur from shock or renal failure. Chronic copper poisoning is typified by hepatic cirrhosis, brain damage and demyelination, kidney defects, and copper deposition in the cornea as exemplified by humans with Wilson s disease. It has also been reported that copper poisoning has led to haemolytic anaemia and accelerates arteriosclerosis. Suppliers and manufacturers.