Correlación de la deformación en los planos superconductores de CuO2 con la temperatura crítica superconductora

In the copper oxide superconductor materials the internal charge transference between the superconducting planes of CuO 2 and the charge reservoir blocks, it is a key factor that control the superconducting critical temperature. The superconducting planes of CuO 2 are not planes in a strict sense, the position of the Cu(2) atom and the O(2), O(3) oxygen atoms are not lying in a same plane, the change of its positions are closely related to atomic replacements in the superconducting planes of CuO 2 or in the charge reservoir blocks. Therefore, we correlates the substitutions effects in the canonical unit cell of YBa 2 Cu 3 O 7 with regard to length and angle bond variation of copper and oxygen atoms with the superconducting critical temperature obtained by Rietveld refinement of x-ray diffraction patterns in polycrystalline powder samples, such as: SmBa 2 Cu 3 O 7 , [Y 0.90 ,Pr 0.10 ]Ba 2 Cu 3 O 7 , [Ca,La]Ba 2 Cu 3 O 7 and YBa 2 Cu 3 O 7 .