Microstructure of bilayer manganite PrCa2Mn2O7 showing charge/orbital ordering
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Date
2013-05-27
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American Institute of Physics
Abstract
The microstructure of the charge/orbital ordering Ruddleden-Popper phase PrCa2Mn2O7 was studied by transmission electron microscopy along both the [001] and the [110] orientation. Three coexisting charge/orbital ordering phases CO1, CO2, and CO3 were observed along the [001] orientation at room temperature. Different from the one-dimensional modulation in the CO1 and CO2 phase, the CO3 phase is characterized by two sets of mutually perpendicular structural modulations. From [110] high angle annular dark field-scanning transmission electron microscopy, we found that the Pr atoms locate in-between the bilayer MnO6 octahedra, which is different from the previous reports. © 2013, American Institute of Physics.
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Keywords
Microscopy, Oxides, Transition elements, Rare earths, Manganates, Perovskite
Citation
He, Z. B., Tian, H., Deng, G. C., Xu, Q., & Van Tendeloo, G. (2013). Microstructure of bilayer manganite PrCa2Mn2O7 showing charge/orbital ordering. Applied Physics Letters 2013, 102(21), 12902. doi:10.1063/1.4807758