X-ray-induced structural transition in (formula presented)
Journal
Physical Review B - Condensed Matter and Materials Physics
Journal Volume
59
Journal Issue
10
Pages
R6581-R6584
Date Issued
1999
Author(s)
Abstract
We report a synchrotron x-ray-scattering study of the magnetoresistive manganite (Formula presented) At low temperatures, this material undergoes an x-ray-induced structural transition at which charge ordering of (Formula presented) and (Formula presented) ions characteristic to the low-temperature state of this compound is destroyed. The transition is persistent but the charge-ordered state can be restored by heating above the charge-ordering transition temperature and subsequently cooling. The charge-ordering diffraction peaks, which are broadened at all temperatures, broaden more upon x-ray irradiation, indicating the finite correlation length of the charge-ordered state. Together with the recent reports on x-ray-induced transitions in (Formula presented) our results demonstrate that the photoinduced structural change is a common property of the charge-ordered perovskite manganites. © 1999 The American Physical Society.
Type
journal article