ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The effects of A-site cation mismatch and disorder on the charge ordering (CO) behavior in the manganites (La1−xYx)0.5(Ca1−ySry)0.5MnO3 have been studied by transmission electron microscopy. The presence of the size mismatch and disorder suppresses the CO transition. Incommensurate CO modulations are observed in three samples with 0≤σ2≤0.003. Structural models, based on the selected area electron diffraction and high-resolution electron microscopy observation, are suggested for such kinds of incommensurate modulations. © 2001 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1364505