New elaboration technique, structure and physical properties of infinite-layer Sr1−xLnxCuO2(Ln = Nd, Pr)

Single-crystal growth of Mg- and Ni-doped chain compound SrCuO2 by the traveling-solvent floating-zone method and chain breaking effect induced by the dopants

“…The structural data are given in Table 1. The lattice parameters a¼ 3.5711(2) Å, b¼ 16.3264(6) Å and c¼ 3.9121(9) Å are very close to the previously reported ones [16]. The lattice parameters, shown in Table 2, remain almost unchanged upon varying dopant concentration, which is expected for the low doping level used.…”

“…Although the structure of SrCuO 2 has already been refined in the past [11][12][13][14][15][16], a structural refinement of our own pure SrCuO 2 single crystals was done in order to have a reference starting point for all the other doped samples. In order to begin the structural refinement, the atomic positions of the SrCuO 2 structure, as described by Podlesnyak et al [16], were chosen.…”

“…In order to begin the structural refinement, the atomic positions of the SrCuO 2 structure, as described by Podlesnyak et al [16], were chosen. The XND program [17] was used to refine all the structures.…”

Influence of oxygen reduction on the structural and electronic properties of electron-doped Sr1−xLaxCuO2 thin films

“…Unfortunately these conditions are not easy to meet. The synthesis of IL bulk ceramic material is difficult, requiring very high pressure (2-6 GPa) [7,8]. No single crystal has been prepared so far.…”

“…Prepared at ambient pressure, SrCuO 2 has an orthorhombic structure and contains double chains Cu 2 O 2 of square planar groups sharing edges joined through one rock-salt type SrO layer [4,5]. To obtain the electron-doped superconductor, one first needs to obtain the compound with requiring very high pressure (2-6 GPa) [7,8]. No single crystal has been prepared so far.…”