Publication Type:Conference Paper
Source:Materials Research Society Symposium - Proceedings, Volume 602, p.81-86 (2000)
Keywords:Cation ordered structures, crystal structure, lanthanum compounds, Positive ions, pulsed laser deposition, thin films, transmission electron microscopy
A careful analysis of high-resolution transmission electron microscopy images from La0.8Ca0.2MnO3 thin films indicates that the images can not explained based on either the classical Pnma structure or its monoclinic distortion. A cation ordered structure is proposed which could be responsible for the significantly higher Tc of the film (298K) compared with the bulk material of the same composition (190K).
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