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- W2014799500 abstract "Abstract Investigations of the crystal chemistry of the family of superconducting cuprates has yielded a rich harvest of crystallographic structures. Further investigation has revealed that many of the structures undergo small distortions which are manifested in a variety of ways. For example, the tetragonal-to-orthorhombic transformations observed in the Y-Ba-Cu-O and La-Sr-Cu-O systems are due respectively to oxygen vacancy ordering and rotation of the CuO6 octahedra. The incommensurate periodicities observed in the Bi-Ca-Sr-Cu-O and Tl-Ba-Ca-Cu-O systems are due to displacements associated with the heavy cations. The commensurate periodicities observed in Gd2CuO4 and other lanthanide cuprates are also probably due to displacements of the rare earth ions. On the other hand, commensurate structures in reduced Y-Ba-Cu-O are due to oxygen vacancy ordering. These various structural instabilities are discussed in terms of structural nuances in the perovskite family." @default.
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- W2014799500 date "1991-02-01" @default.
- W2014799500 modified "2023-09-27" @default.
- W2014799500 title "Structural instabilities in superconducting cuprates" @default.
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- W2014799500 doi "https://doi.org/10.1016/0022-5088(91)90034-2" @default.
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