Epitaxial La 0.7 Sr 0.3 MnO 3 thin films have been grown on LaAlO 3 (001) substrates by pulsed laser deposition under different target-plume-substrate configurations. Outgrowths of various shape and size from some of the manganite films are observed. When the substrate is placed within the visible laser-produced energetic plasma plume, the deposited films are outgrowth-free and exhibit good crystallinity and high electrical conductivity. The formation mechanisms and control measures of the outgrowths in pulsed laser deposited manganite films are discussed.
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Wu et al. (1999) studied this question.
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