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@ARTICLE{Houben:57923,
      author       = {Houben, L. and Thust, A. and Urban, K.},
      title        = {{A}tomic-precision determination of the reconstruction of a
                      90° tilt boundary in {YB}a2{C}u3{O}7-delta by aberration
                      corrected {HRTEM}},
      journal      = {Ultramicroscopy},
      volume       = {106},
      issn         = {0304-3991},
      address      = {Amsterdam},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-57923},
      pages        = {200 - 214},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Aberration corrected high-resolution transmission electron
                      microscopy is used to determine the reconstruction of atomic
                      bonds of a 90 degree [100] grain boundary in
                      YBa(2)Cu(3)O(7-delta). A precise measurement of atom
                      positions within the grain boundary and the assessment of
                      the oxygen stoichiometry require at the same time a high
                      control of residual lens aberrations of the electron
                      microscope and a good signal-to-noise ratio. This goal is
                      achieved by the combination of spherical-aberration
                      correction in the microscope with the numerical exit-plane
                      wave function reconstruction from focal series. Atomic
                      column positions for individual cations and anions are
                      determined by the regression analysis of peak maxima in the
                      phase image of the retrieved exit-plane wave function. The
                      measurement accuracy is quantitatively assessed, including
                      the statistical error related to residual noise. Changes in
                      bondlengths between copper atoms and the apical oxygen are
                      measured, indicating the distortion of the square pyramidal
                      oxygen coordination of plane copper sites and the square
                      coordination of chain copper sites in the grain boundary.},
      keywords     = {J (WoSType)},
      cin          = {IFF-IMF / JARA-FIT},
      ddc          = {570},
      cid          = {I:(DE-Juel1)VDB37 / $I:(DE-82)080009_20140620$},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Microscopy},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:16226377},
      UT           = {WOS:000234690600005},
      doi          = {10.1016/j.ultramic.2005.07.009},
      url          = {https://juser.fz-juelich.de/record/57923},
}