Abstract
We report a synchrotron x-ray-scattering study of the magnetoresistive manganite At low temperatures, this material undergoes an x-ray-induced structural transition at which charge ordering of and 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 our results demonstrate that the photoinduced structural change is a common property of the charge-ordered perovskite manganites.
- Received 23 November 1998
DOI:https://doi.org/10.1103/PhysRevB.59.R6581
©1999 American Physical Society