@article{oai:mie-u.repo.nii.ac.jp:00004938,
 author = {Takeda, Yasuo and 武田, 保雄 and Imanishi, Nobuyuki and 今西, 誠之 and Yamamoto, Osamu and 山本, 治},
 journal = {Research reports of the Faculty of Engineering, Mie University},
 month = {Dec},
 note = {application/pdf, Effects of high oxygen pressure have been studied on the formation, structure and physical properties of Cu-oxides with perovskite-related structure. Wide range of oxygen deficiencies were realized in LaCuO₃‐z by changing the synthetic oxygen pressure. The transition metal doped 123 type superconductors, RBa₂Cu₃‐ₓMₓOz(R:Y, Gd; M:Fe, Co) prepared under high oxygen pressure are good example in which we can see the very clear microdomain formation. The YBCO related superconductor, YBaSrCu₃Oz, showed the structural change on XRD observation from orthorhombic to tetragonal when oxygen was over-doped above z=7.0. The "tetragonal phase" was also due to the microdomain formation and the XRD pattern was only averaged one. La₂₋ₓAₓCuO₄₊z with A=Nd and Bi having various oxygen content was prepared under high oxygen pressure and the electrochemical oxidation. They showed large superconducting volume fractions by oxygen dope. The known microscopic phase separation into nearly stoichionetric La₂CuO₄ and superconducting La₂CuO₄₊z seems to be suppressed by the chemical substitution in the rock salt layers.},
 pages = {103--122},
 title = {Synthesis of Copper Oxide Superconductors under High Oxygen Pressure},
 volume = {17},
 year = {1992}
}