Structural evolution of one-dimensional spin-ladder compounds Sr.sub.14-x./sub.Ca.sub.x./sub.Cu.sub.24./sub.O.sub.41./sub. with Ca doping and related evidence of hole redistribution

0369376 - FZÚ 2012 RIV US eng J - Journal Article
Deng, G. - Pomjakushin, V. - Petříček, Václav - Pomjakushina, E. - Kenzelmann, M. - Conder, K.
Structural evolution of one-dimensional spin-ladder compounds Sr_14-xCa_xCu₂₄O₄₁ with Ca doping and related evidence of hole redistribution.
Physical Review. B. Roč. 84, č. 14 (2011), 144111/1-144111/14. ISSN 1098-0121
Grant - others:AV ČR(CZ) AP0701
Program: Akademická prémie - Praemium Academiae
Institutional research plan: CEZ:AV0Z10100521
Keywords : composite crystal-structures * true satellite reflections * Sr₁₄Cu₂₄O₄₁ * pressure * superconductivity * dynamics * phases * charge
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.691, year: 2011

Incommensurate crystal structures of spin-ladder series Sr14-xCaxCu24O41 (x = 3, 7, 11, and 12.2) were characterized by powder neutron scattering method and refined using the superspace group Xmmm(00 gamma)ss0 [equivalent to superspace group Fmmm(0, 0, 1 + gamma)ss0 with a modulated structure model. The Ca doping effects on the lattice parameters, atomic displacement, Cu-O distances, Cu-O bond angles, and Cu bond valence sum were characterized.
Permanent Link: http://hdl.handle.net/11104/0203456