TY  - JOUR
AU  - Ran, Ke
AU  - Deibert, W.
AU  - Ivanova, M. E.
AU  - Meulenberg, W. A.
AU  - Mayer, J.
TI  - Crystal structure investigation of La5.4W1−yMoyO12−δ for gas separation by high-resolution transmission electron microscopy
JO  - Scientific reports
VL  - 9
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - FZJ-2019-03072
SP  - 3274
PY  - 2019
AB  - Lanthanum tungstate (LWO)    and   LWO   with   20  at.%   and   35  at.%   molybdenum substituting tungsten were   prepared by  the  Pechini    method.     Phase    purity    and   successful Mo  substitution inside    these   dense LWO   membrane materials were   confirmed by  conventional and   high   resolution transmission electron microscopy techniques. The   split   of  La2/W2 site   by  around    0.3  Å  was   proven.    Extra   reflections show   up in  the  diffraction patterns     from   Mo-substituted LWO,   and   together with   simulations, these   reflections were   recognized as  forbidden reflections in  a  non-substituted LWO   system,    while   the  extinction rules are  broken    by  Mo  substitution due   to  the  different     scattering factors    of  W  and   Mo.   Energy-dispersive X-ray   chemical mapping allowed    direct   visualization of  individual atomic    columns, and   revealed     that   all Mo is located at the W1 sites   in  the  Mo-substituted LWO.   Moreover, the  diffuse    scattering in  diffraction patterns     provides     direct   evidence of  short   range   clustering of  oxygen    vacancies and   could   be  further related    to  the  oxygen    conduction of  the  LWO   memb
LB  - PUB:(DE-HGF)16
C6  - pmid:30824737
UR  - <Go to ISI:>//WOS:000459983900080
DO  - DOI:10.1038/s41598-019-39758-2
UR  - https://juser.fz-juelich.de/record/862889
ER  -