TY  - JOUR
AU  - Yin, Jing-Wei
AU  - Wang, Yan
AU  - Chen, Yue-Hua
AU  - Wu, Sheng-Qiang
AU  - Cheng, Shao-Dong
AU  - Mi, Shao-Bo
AU  - Lu, Lu
AU  - Jin, Lei
AU  - Wang, Hong
TI  - Growth and characterization of pyrochlore-type (Ca,Ti)2(Nb,Ti)2O7 thin films
JO  - Thin solid films
VL  - 721
SN  - 0040-6090
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2021-00854
SP  - 138546 -
PY  - 2021
AB  - Pyrochlore-type (Ca,Ti)2(Nb,Ti)2O7 thin films have been grown on single-crystalline LaAlO3 and yttria-stabilized zirconia substrates by a magnetron sputtering system. Atomic-scale interface structure and growth mode of the (Ca,Ti)2(Nb,Ti)2O7 films on the substrates with different crystal structures have been investigated by advanced electron microscopy techniques. In both heterosystems, the film/substrate orientation relationship of [100](001)film//[100](001)substrate has been determined. In the heterosystem of (Ca,Ti)2(Nb,Ti)2O7/yttria-stabilized zirconia, the films directly grow on the substrates. In contrast, in the (Ca,Ti)2(Nb,Ti)2O7/LaAlO3 heterosystem, a perovskite-type Ca1-□(Ti,Nb)O3 interlayer with a few unit cells in thickness forms at the interface and interfacial reconstruction occurs at the (Ca,Ti)2(Nb,Ti)2O7/Ca1-□(Ti,Nb)O3 interface. Our findings indicate that the formation of the interlayer and the (Ca,Ti)2(Nb,Ti)2O7/Ca1-□(Ti,Nb)O3 interface reconstruction can accommodate the film/substrate dissimilarities in the crystal structures and facilitate the growth of single-crystalline pyrochlore-type films on the perovskite-type substrates.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000621728300003
DO  - DOI:10.1016/j.tsf.2021.138546
UR  - https://juser.fz-juelich.de/record/890273
ER  -