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Precession ED by software control. K 2 O . 7Nb 2 O 5 , P 4 /mbm,a = 27.5 Å, c = 3.94 Å. Zhang, Grüner, Oleynikov, Wan, Hovmöller, Zou, submitted. Comparison of SAED and precession ED data. K 2 O . 7Nb 2 O 5 , P 4 /mbm,a = 27.5 Å, c = 3.94 Å. With 1.1º precession. Without precession.
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Precession ED by software control K2O.7Nb2O5,P4/mbm,a = 27.5 Å, c = 3.94 Å Zhang, Grüner, Oleynikov, Wan, Hovmöller, Zou, submitted
Comparison of SAED and precession ED data K2O.7Nb2O5,P4/mbm,a = 27.5 Å, c = 3.94 Å With 1.1º precession Without precession Taken by Daliang Zhang using Spinning Star
Phasing electron diffraction data by direct methods in a similar way as for X-ray diffraction ... Potential map obtained by direct method using Sir97 All Nb atoms are found from the potential map
Automated Electron Diffraction Tomography (ADT) Eward sphere Crystal reciprocal lattice E. Mugnaioli, T. Gorelik, U. Kolb. Ultramicroscopy 109 (2009) 758
Automated Electron Diffraction Tomography Automatic data collection by the rotation method Series of tilted electron beam Electron beam tilt + goniometer tilt Specimen Zhang, Oleynikov, Hovmöller, Zou, Z. Kristallogr. 225 (2010) 94 Electron beam Goniometer tilt Specimen Mugnaioli, Gorelik, Kolb. Ultramicroscopy 109 (2009) 758
Automatic ED data collection by combining beam rotation and goniometer tilt K2O.7Nb2O5,P4/mbm, a = 27.5 Å, c = 3.94 Å From -5 º to 5º Zhang, Oleynikov, Hovmöller, Zou, Z. Kristallogr.225 (2010) 94
Reconstructed 3D reciprocal lattice – Beta zeolite A section of 145º with > 1450 ED frames can be collected in less than 60 minutes