90 citations · 268 across the 13 of their papers we have counts for
10 papers · 1 filter
Overdoped Cuprates With High Temperature Superconducting Transitions
M. Marezio, O. Chmaissem, C. Bougerol +3
Evidence for High Tc cuprate superconductivity is found in a region of the phase diagram where non-superconducting Fermi liquid metals are expected. Cu valences estimated independe…
Micro-structure and Magnetization of the 80-K Superconductor, TbSr2Cu2.7Mo0.3O7+d
V. P. S. Awana, Anurag Gupta, H. Kishan +5
The results of micro-structural and detailed magnetization studies are reported here for our recently published TbSr2Cu2.7Mo0.3O7+d superconductor with a transition temperature (Tc…
Oxidation State of Cobalt in the NaxCoO2-d yH2O Superconductor
Maarit Karppinen, Isao Asako, Teruki Motohashi +1
Here we present results of accurate wet-chemical redox analyses, revealing that the oxidation number of cobalt in the newly discovered CoO2-layer superconductor, NaxCoO2 yH2O (x ~…
Superconductivity in CoSr2(Y1-xCax)Cu2O7+d
Y. Morita, H. Yamauchi, M. Karppinen
The roles of aliovalent Ca(II)-for-Y(III) substitution and high-pressure-oxygen annealing in the process of "superconducterizing" the Co-based layered copper oxide, CoSr2(Y1-xCax)C…
Layered-specific hole concentrations in Bi2Sr2(Y1-xCax)Cu2O8+d as probed by XANES spectroscopy and coulometric redox analysis
M. Karppinen, M. Kotiranta, T. Nakane +4
Induction of holes not only in the superconductive CuO2 plane but also in the Bi2O2+d charge reservoir of the Bi2Sr2(Y1-xCax)Cu2O8+d superconductor upon CaII-for-YIII substitution…
Magneto-superconductivity of 100-atm O2-annealed RuSr2Gd1.5Ce0.5Cu2O10
V. P. S. Awana, E. Takayama-Muromachi, M. Karppinen +1
Studied 100-atm O2-annealed RuSr2Gd1.5Ce0.5Cu2O10 (Ru-1222) compound crystallized in a tetragonal I4/mmm space group crystal structure. Thermo-gravemetric (TG) analysis of the comp…