发布时间：2025-04-30

论文名称：Microstructure and electrical conductivity of (Y, Sr)CoO3-δ thin films tuned by the film-growth temperature

发表刊物：Journal of Alloys and Compounds

摘要：Epitaxial films composed of (Y,Sr)CoO3-δ and nano-scale Y2O3 columns are successfully grown on (La0.289Sr0.712)(Al0.633Ta0.356)O3(001) substrates at 900 °C. The microstructural and electrical properties of the composite films are investigated and compared with those of the single-phase films prepared at 800 °C. In the composite films oxygen vacancies are detectable, which occur alternately in the stacking CoO2-δ planes of (Y,Sr)CoO3-δ. In addition, it is found that a large number of misfit dislocations distribute at the interfaces between the Y2O3 columns and the (Y,Sr)CoO3-δ film matrix. The measured resistivity of the composite films is significantly lower than that of the (Y,Sr)CoO3-δ single-phase films. Our results indicate that the electrical properties of the perovskite-based cobaltates films can be tuned by changing the microstructure through controlling the film-growth temperature.

合写作者：H. M. Jing, G. Hu, S.B. Mi, L. Lu, M. Liu, S. D. Cheng, S. Cheng, C.L. Jia

卷号：714

页面范围：181-185

是否译文：否

发表时间：2017-04-20