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000057923 084__ $$2WoS$$aMicroscopy
000057923 1001_ $$0P:(DE-Juel1)VDB4944$$aHouben, L.$$b0$$uFZJ
000057923 245__ $$aAtomic-precision determination of the reconstruction of a 90° tilt boundary in YBa2Cu3O7-delta by aberration corrected HRTEM
000057923 260__ $$aAmsterdam$$bElsevier Science$$c2006
000057923 300__ $$a200 - 214
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000057923 520__ $$aAberration 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.
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000057923 65320 $$2Author$$aspherical-aberration correction
000057923 65320 $$2Author$$aexit-plane wave function reconstruction
000057923 65320 $$2Author$$agrain-boundary reconstruction
000057923 65320 $$2Author$$aYBCO
000057923 7001_ $$0P:(DE-Juel1)VDB5035$$aThust, A.$$b1$$uFZJ
000057923 7001_ $$0P:(DE-Juel1)VDB4950$$aUrban, K.$$b2$$uFZJ
000057923 773__ $$0PERI:(DE-600)1479043-9$$a10.1016/j.ultramic.2005.07.009$$gVol. 106, p. 200 - 214$$p200 - 214$$q106<200 - 214$$tUltramicroscopy$$v106$$x0304-3991$$y2006
000057923 8567_ $$uhttp://dx.doi.org/10.1016/j.ultramic.2005.07.009
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000057923 9141_ $$aNachtrag$$y2006
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000057923 9201_ $$0I:(DE-Juel1)VDB37$$d31.12.2006$$gIFF$$kIFF-IMF$$lMikrostrukturforschung$$x1
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