%0 Journal Article
%A Lu, Jiangbo
%A Lu, Lu
%A Cheng, Sheng
%A Liu, Ming
%A Jia, Chunlin@fz-juelich. de
%T Microstructure and secondary phases in epitaxial LaBaCo 2 O 5.5+δ thin films
%J Journal of materials science & technology
%V 34
%N 2
%@ 1005-0302
%C Shenyang
%I Ed. Board, Journal of Materials Science & Technology
%M FZJ-2019-01058
%P 398 - 402
%D 2018
%X Aberration-corrected scanning transmission electron microscopy was employed to investigate the microstructures and secondary phases in LaBaCo2O5.5 + δ (LBCO) thin films grown on SrTiO3 (STO) substrates. The as-grown films showed an epitaxial growth on the substrates with atomically sharp interfaces and orientation relationships of [100]LBCO//[100]STO and (001)LBCO//(001)STO. Secondary phases were observed in the films, which strongly depended on the sample fabrication conditions. In the film prepared at a temperature of 900 °C, nano-scale CoO pillars nucleated on the substrate, and grew along the [001] direction of the film. In the film grown at a temperature of 1000 °C, isolated nano-scale Co3O4 particles appeared, which promoted the growth of {111} twinning structures in the film. The orientation relationships and the interfaces between the secondary phases and the films were illustrated, and the growth mechanism of the film was discussed.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000426447800020
%R 10.1016/j.jmst.2016.09.027
%U https://juser.fz-juelich.de/record/860283