Enhanced physical compatibility in manganite/cuprate multilayer with high-quality interface

Xie, Qiyun, Qian, Bin, Wu, Xiaoshan, Zou, Jin and Gao, Ju (2011) Enhanced physical compatibility in manganite/cuprate multilayer with high-quality interface. Thin Solid Films, 519 23: 8338-8342. doi:10.1016/j.tsf.2011.03.064

Author Xie, Qiyun
Qian, Bin
Wu, Xiaoshan
Zou, Jin
Gao, Ju
Title Enhanced physical compatibility in manganite/cuprate multilayer with high-quality interface
Journal name Thin Solid Films   Check publisher's open access policy
ISSN 0040-6090
Publication date 2011-09
Sub-type Article (original research)
DOI 10.1016/j.tsf.2011.03.064
Volume 519
Issue 23
Start page 8338
End page 8342
Total pages 5
Place of publication Lausanne, Switzerland
Publisher Elsevier S.A.
Collection year 2012
Language eng
Formatted abstract
A systematical study of the relationship between microstructure of interface and physical properties is performed on La0.67Ca 0.33MnO3(LCMO)/YBa0.85Eu0.15Cu 3O7 (YEBCO) multilayer. Flat and chemically well-defined interface is found for the film grown on (001) oriented SrTiO3 (STO) substrate. High resolution transmission electron microscopy observations reveal that nano-scale periods of multilayer structure can effectively suppress the second phase inclusions that are commonly seen in superconducting single layer. The coexistence of ferromagnetism and superconducting behavior is evidenced in [(LCMO)/(YEBCO)]6/STO multilayer. In contrast, when using Y stabilized ZrO2 single crystals (YSZ) as substrate, pyramid-like defects and disordering layer form because of the lattice mismatch between the film and the substrate. The superconducting transition response is lost in this case but large magnetoresistance is obtained. These results indicate an extensive rearrangement of ferromagnetic domain under applied magnetic field at extended defects dominated [(LCMO)/(YEBCO)]6/YSZ multilayer. The decoupling of ferromagnetism and superconductivity in [(LCMO)/(YEBCO)] 6/YSZ multilayer is ascribed to the missing high-quality interface nature that otherwise present in [(LCMO)/(YEBCO)]6/STO multilayer.
Keyword Manganite/cuprate multilayer
Interface structure
Transmission electron microscopy (TEM)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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