Počet záznamů: 1

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

  1. 1.
    0369376 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Deng, G. - Pomjakushin, V. - Petříček, Václav - Pomjakushina, E. - Kenzelmann, M. - Conder, K.
    Structural evolution of one-dimensional spin-ladder compounds Sr14-xCaxCu24O41 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 ostatní: AVČR(CZ) Praemium Academiae
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: composite crystal-structures * true satellite reflections * Sr14Cu24O41 * pressure * superconductivity * dynamics * phases * charge
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.691, rok: 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.
    Trvalý link: http://hdl.handle.net/11104/0203456