TY  - JOUR
AU  - Jing, Hong-Mei
AU  - Hu, Guang-Liang
AU  - Mi, Shao-Bo
AU  - Lu, Lu
AU  - Liu, Mingshan
AU  - Cheng, Shao-Dong
AU  - Cheng, Sheng
AU  - Jia, Chun-Lin
TI  - Microstructure and electrical conductivity of (Y,Sr)CoO3-delta thin films tuned by the film-growth temperature
JO  - Journal of alloys and compounds
VL  - 714
SN  - 0925-8388
CY  - Lausanne
PB  - Elsevier
M1  - FZJ-2017-06692
SP  - 181 - 185
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000402208500024
DO  - DOI:10.1016/j.jallcom.2017.04.192
UR  - https://juser.fz-juelich.de/record/837922
ER  -