TY - JOUR
T1 - Genesis of superconductivity in the layered cuprates
T2 - (ACuO2.5)2(ATiO3)m ; 2 ≤ m ≤ 4
AU - Salvador, P. A.
AU - Otzschi, K. D.
AU - Zhang, H.
AU - Dabrowski, B.
AU - Jorgensen, J. D.
AU - Mason, T. O.
AU - Marks, L. D.
AU - Poeppelmeier, K. R.
N1 - Funding Information:
The absence of superconductivity in the quadruple perovskites has been partly attributed to the long Cu-O in-plane bond lengths (::: 1.9SA for Tb2B~Cu2TiPI1 and Gd2B~Cu2TiPlI' ::: 2.ooA in La.zB~Cu2SnPlI) which are o.01A to o.06A larger than known hole-type superconductors. In-situ hightemperature electrical conductivity and thermopower measurements of several of these materials (La2B~Cu2SnPlI' L ~B~Cu2Ti201l and Eu2Ba2CuzTi Pu) demonstrated the similarity of their transport properties to those of the superconducting layered cuprates, and showed that low carrier concentrations were predominantly responsible for the absence of superconductivity [3]. Control of the inner architecture will be required if optimal doping concentrations are to be realized. In addition, the chemical factors which restrict oxidation in these t Supported by the NSF Science and Technology Center for Superconductivity under grant DMR 91-20000 (PAS, HZ, BD, TOM, LDM, KRP), U.S. Department of Energy, BES-Materials Sciences under contract IW-31-109-ENG-38(JDJ), and the Japan Society for the Promotion of-Science for Young Scientists (KDO).
PY - 1997/8
Y1 - 1997/8
N2 - The internal chemistry of the quadruple perovskite Ln'Ln''Ba2Cu2Ti2O11 (Ln'Ln" = NdDy), such as solid solution behavior, stable defect species, and oxidation behavior, has been investigated by structural and physical property measurements and related to the inner architecture of these interesting layered compounds.
AB - The internal chemistry of the quadruple perovskite Ln'Ln''Ba2Cu2Ti2O11 (Ln'Ln" = NdDy), such as solid solution behavior, stable defect species, and oxidation behavior, has been investigated by structural and physical property measurements and related to the inner architecture of these interesting layered compounds.
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U2 - 10.1016/S0921-4534(97)00594-7
DO - 10.1016/S0921-4534(97)00594-7
M3 - Article
AN - SCOPUS:0031210589
VL - 282-287
SP - 959
EP - 960
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 2
ER -