TY  - JOUR
AU  - Jin, Xiaowei
AU  - Chen, Yue-Hua
AU  - Lu, Lu
AU  - Mi, Shao-Bo
AU  - Jin, Lei
AU  - Jing, Hong-Mei
AU  - Wang, Hong
AU  - Jia, Chun-Lin
TI  - Heteroepitaxial growth and interface structure of pyrochlore (Ca,Ti)2(Nb,Ti)2O7 thin films on (110)NdGaO3 substrates
JO  - Journal of crystal growth
VL  - 484
SN  - 0022-0248
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2019-01069
SP  - 64 - 69
PY  - 2018
AB  - Epitaxial thin films of (Ca,Ti)2(Nb,Ti)2O7 with pyrochlore structure have been successfully fabricated on orthorhombic (1 1 0) NdGaO3 substrates by a magnetron sputtering system. By analysis of selected-area electron diffraction patterns, the film-substrate orientation relationship is determined to be 〈0 0 1〉{1 0 0}film//[0 0 1](1 1 0)substrate. Atomic-scale structure investigations of the heterointerface by means of advanced electron microscopy reveal that a perovskite-type Ca(Ti,Nb)O3 layer with a thickness of several unit cells forms between the (Ca,Ti)2(Nb,Ti)2O7 films and the NdGaO3 substrates. The formation of the Ca(Ti,Nb)O3 layer results from the demand for accommodation of the crystal structure mismatching between the pyrochlore film and the perovskite-type substrate, which favors the epitaxial growth of the (Ca,Ti)2(Nb,Ti)2O7 films on the NdGaO3 substrates.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000419570700011
DO  - DOI:10.1016/j.jcrysgro.2017.12.038
UR  - https://juser.fz-juelich.de/record/860294
ER  -