Superconductivity and antiferromagnetism in the Cu(2) planes ofYBa2Cu3O7Hx

Mössbauer, magnetic susceptibility, and powder x-ray diffraction measurements were performed to study the magnetic properties and superconductivity of hydrogen-charged ${\mathrm{YBa}}_2$ ${\mathrm{Cu}}_3$ ${\mathrm{O}}_7$ ${\mathrm{H}}_{\mathit{x}}$ doped with 2 at.% ${}_{}{}^{57}{}_{}{}^{}\mathrm{Fe}$. $T sub c — is reduced with increasing H concentration and superconductivity was absent at x=1.3. An analysis of the Mössbauer spectra at different temperatures shows that antiferromagnetism at the Cu(2) sites is induced by hydrogen in a very similar way as the removal of oxygen. The phase diagram is very similar to the well-known phase diagrams obtained in a wide family of cationic substitutions in ${\mathrm{YBa}}_2$ ${\mathrm{Cu}}_3$ ${\mathrm{O}}_7$.