https://doi.org/10.1007/s100510050662
The charge ordered phase in La1-xSrxMnO3 studied by means of high energy X-ray diffraction
1
Hamburger Synchrotronstrahlungslabor HASYLAB
at Deutsches
Elektronen-Synchrotron DESY,
Notkestrasse 85, 22603 Hamburg, Germany
2
II. Physikalisches Institut, Universität zu Köln,
Zülpicher Strasse 77, 50937 Köln, Germany
3
Condensed Matter Physics and Chemistry Department,
Risø National Laboratory,
4000 Roskilde, Denmark
4
Laboratoire de Chimie des Solides (CNRS -URA 446) ,
Bâtiment 414
Université Paris-Sud, 91405 Orsay Cedex, France
Received:
23
February
1998
Published online: 15 March 1999
Superstructure reflections due to charge ordering have been observed in
single crystals using X-ray diffraction.
The critical temperatures for the ordering process
are 150 K and 180 K in samples with
Sr concentrations of 
and 
, respectively.
For x =0.125 the charge order transition correlates
with a drastic resistivity enhancement, while
a much smaller change of the resistivity is found for
x = 0.15.
It is argued that the onset of charge ordering
in the sample with
x = 0.125 is related
to the suppression of co-operative Jahn-Teller distortions which
is initiated by rising ferromagnetism.
PACS: 61.10.Nz – Single-crystal and powder diffraction / 71.38.+i – Polarons and electron-phonon interactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
