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The top layer of a cleaved surface of the single layered manganite La 0.5 Sr 1.5 MnO 4 is measured with crystal truncation rod scattering. Knowledge of the surface structure of strongly correlated electron systems is needed for nano-science and device application of such systems. The result shows that the cleaved surface is terminated by La/Sr layer and has little surface roughness.
FeCl 3 ·6H 2 O was used in the wet etching of single crystalline ZnO films. The method has great effects on the suppression of the “W” shaped etching profile usually observed when ZnO films were etched by acid. “U” shaped profile and smooth surface morphology were obtained under a wide range of etching rate, as confirmed by stylus profiler and scanning electron microscopy. The ferric...
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