Phys. Rev. B 72, 134104 (2005) [4 pages]Structurally frustrated relaxor ferroelectric behavior in CaCu3Ti4O12See Also: Publisher's Note Received 5 July 2005; published 7 October 2005; publisher error corrected 2 November 2005 Direct diffraction evidence for structurally frustrated relaxor ferroelectric behavior in the form of one-dimensionally correlated, off-center displacements of Ti ions within the TiO6 octahedra of CaCu3Ti4O12 (CCTO) has been obtained. When coupled with the observation of a ferroelectric effect, important implications for the understanding of the extraordinary dielectric properties of CCTO arise. That the incipient ferroelectric behavior is correlated only along one-dimensional ⟨001⟩ columns of TiO6 octahedra in the absence of an applied electric field offers a crucial insight into the underlying nature of CCTO and suggests the existence of a unique class of structurally frustrated, ferroelectric relaxors. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.72.134104
DOI:
10.1103/PhysRevB.72.134104
PACS:
77.22.Gm, 61.14.−x, 77.84.Dy
See AlsoPublisher's Note: Yun Liu, Ray L. Withers, and Xiao Yong Wei, Publisher's Note: Structurally frustrated relaxor ferroelectric behavior in CaCu3Ti4O12 [Phys. Rev. B 72, 134104 (2005)], Phys. Rev. B 72, 179901 (2005). |
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