ATOMISTIC MODELS Ab initio calculations BiFeO3 Bismuth compounds Calculations Doping (additives) Electric polarization Electronic and magnetic properties Ferromagnetic response INTOLERANCIA Iron arsenide superconductors Iron compounds JUDÍOS MINORÍAS RELIGIOSAS MINORÍAS ÉTNICAS MODELOS ATOMISTICOS MONOCRISTALES MULTIFERROICOS MULTIFERROICS Magnetic moments Magnetic penetration depth Morphotropic phase boundaries Phase transitions SUPERCONDUCTORES Structural transitions Superconducting properties in heavily overdoped Ba(Fe0.86Co0.14)2As2 single crystals TOLERANCIA Upper critical field Vortex pinning Y doping