TY - JOUR
T1 - Superconductivity in Hole-Doped La1.8-xEu0.2CaxCuO4 with the Nd2CuO4-Type Structure
AU - Takamatsu, Tomohisa
AU - Kato, Masatsune
AU - Noji, Takashi
AU - Koike, Yoji
N1 - Funding Information:
This work was partly supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science.
Publisher Copyright:
© 2014 The Authors.
PY - 2014
Y1 - 2014
N2 - We have succeeded in synthesizing hole-doped bulk superconductors of La1.8-xEu0.2CaxCuO4 (x = 0.05 and 0.10) with the Nd2CuO4-type structure by means of the structural transformation at low temperatures from the K2NiF4-type structure via the Nd4Cu2O7-type structure. Superconductivity has appeared through the removal of excess oxygen by the reduction annealing in vacuum. Values of the superconducting transition temperature, Tc, are 13 and 6 K for x = 0.05 and 0.10, respectively. These values are smaller than those of T'-La1.8-xEu0.2SrxCuO4.
AB - We have succeeded in synthesizing hole-doped bulk superconductors of La1.8-xEu0.2CaxCuO4 (x = 0.05 and 0.10) with the Nd2CuO4-type structure by means of the structural transformation at low temperatures from the K2NiF4-type structure via the Nd4Cu2O7-type structure. Superconductivity has appeared through the removal of excess oxygen by the reduction annealing in vacuum. Values of the superconducting transition temperature, Tc, are 13 and 6 K for x = 0.05 and 0.10, respectively. These values are smaller than those of T'-La1.8-xEu0.2SrxCuO4.
KW - High-T superconductivity
KW - Hole-doping
KW - Reduction annealing
KW - Solid-state reaction
KW - The NdCuO-type structure
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U2 - 10.1016/j.phpro.2014.09.012
DO - 10.1016/j.phpro.2014.09.012
M3 - Conference article
AN - SCOPUS:84984885483
VL - 58
SP - 46
EP - 49
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3892
T2 - 26th International Symposium on Superconductivity, ISS 2013
Y2 - 18 November 2013 through 20 November 2013
ER -