Yutirium barium copper oxide (YBCO)

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can YBCO be prepared in lab.?:biggrin: :approve:
 
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digital ranger said:
can YBCO be prepared in lab.?:biggrin: :approve:

4BaCO3 + Y2(CO3)3 + 6 CuCO3 → 2 YBa2Cu3O{7-x} + 13 CO2 + (3+x)O2
 
thanks ,
I want to know wether it can withstand induction from an electron beam as a superconductor ,too?
 
Please explain that question. It's not clear what you are asking.
 
I've read that YBCO cannot withstand high currents...why?:confused:
And what are the limitations?:rolleyes:
 
Vaguely recall something about the lack of magnetic pinning.
Generally, some sort of lattic dislocation, that localized magnetic field lines freeing the rest of the surface.
I think this was adjustable, but don't recall if the additional dopeing was applicable to YBCO.
 
From the BCS theory of superconductivity is well known that the superfluid density smoothly decreases with increasing temperature. Annihilated superfluid carriers become normal and lose their momenta on lattice atoms. So if we induce a persistent supercurrent in a ring below Tc and after that slowly increase the temperature, we must observe a decrease in the actual supercurrent, because the density of electron pairs and total supercurrent momentum decrease. However, this supercurrent...
Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...

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