%0 Journal Article
%A Jing, Hong-Mei
%A Hu, Guang-Liang
%A Mi, Shao-Bo
%A Lu, Lu
%A Liu, Mingshan
%A Cheng, Shao-Dong
%A Cheng, Sheng
%A Jia, Chun-Lin
%T Microstructure and electrical conductivity of (Y,Sr)CoO3-delta thin films tuned by the film-growth temperature
%J Journal of alloys and compounds
%V 714
%@ 0925-8388
%C Lausanne
%I Elsevier
%M FZJ-2017-06692
%P 181 - 185
%D 2017
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000402208500024
%R 10.1016/j.jallcom.2017.04.192
%U https://juser.fz-juelich.de/record/837922