Evidence for the charge-ordered state and phase separation at room temperature in half-doped La0.5Ca0.5MnO3 films

The microstructure and the magnetotransport properties of La0.5Ca0.5MnO3 films, prepared by rf magnetron sputtering on a LaAlO3 substrate, have been investigated. The electron-diffraction and the high-resolution electron-microscopy studies reveal the coexistence at room temperature of double-period...

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Bibliographic Details
Published in:Applied physics letters 2006-07, Vol.89 (5)
Main Authors: Park, S. Y., Hyun, Y. H., Lee, Y. P., Svetchnikov, V. L., Kim, K. W., Prokhorov, V. G.
Format: Article
Language:English
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Summary:The microstructure and the magnetotransport properties of La0.5Ca0.5MnO3 films, prepared by rf magnetron sputtering on a LaAlO3 substrate, have been investigated. The electron-diffraction and the high-resolution electron-microscopy studies reveal the coexistence at room temperature of double-period modulated (charge-ordered) and unmodulated (charge-disordered) phases. It is suggested that the high-temperature fragmentation of film results in the magnetic-phase-separated state at low temperatures.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2243340