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Carbon Concentration Dependence of the Superconducting Transition Temperature and Structure of MgCxNi3
T. G. Amos, Q. Huang, J. W. Lynn +2
The crystal structure of the superconductor MgCxNi3 is reported as a function of carbon concentration determined by powder neutron diffraction. The single-phase perovskite structur…
Synthesis, Crystal Structure and Magnetic Properties of the Linear-Chain Cobalt Oxide Sr5Pb3CoO12
K. Yamaura, Q. Huang, E. Takayama-Muromachi
The novel spin-chain cobalt oxide Sr5Pb3CoO12 [P-62m, a = 10.1093(2) A and c = 3.562 51(9) A at 295 K] is reported. Polycrystalline sample of the compound was studied by neutron di…
Crystal Structure and Magnetism of the Linear-Chain Copper Oxides Sr5Pb3-xBixCuO12
K. Yamaura, Q. Huang, E. Takayama-Muromachi
The title quasi-1D copper oxides (0=< x =<0.4) were investigated by neutron diffraction and magnetic susceptibility studies. Polyhedral CuO4 units in the compounds were found to co…
Temperature dependence of the structural parameters of the non-oxide perovskite superconductor MgCNi3
Q. Huang, T. He, K. A. Regan +5
We report the structural parameters of superconducting MgCxNi3 (x=0.96, TC=7.3 K) as a function of temperature, from 2 K to 295 K, determined by neutron powder diffraction profile…
Giant anharmonicity and non-linear electron-phonon coupling in MgB; A combined first-principles calculations and neutron scattering study
T. Yildirim, O. Gulseren, J. W. Lynn +12
We report first-principles calculations of the electronic band structure and lattice dynamics for the new superconductor MgB. The excellent agreement between theory and our i…