Abstract
Constructing artificial heterointerfaces in the complex oxides composites to enhance and explore new functionalities have been attracting extensive scientific attentions. It is of great significant to clarify the role of heterointerfaces on the functional properties. In this study, the La0.7Sr0.3MnO3/NiO heterointerfaces were constructed in self-assembled epitaxial (La0.7Sr0.3MnO3)0.5:NiO0.5 (LSMO:NiO) nanocomposite thin films by the method of pulsed laser deposition (PLD). The effect of LSMO/NiO heterointerfaces on the magnetic and electrical transport properties were studied by changing the geometric distribution of heterointerface and interfacial area. Interestingly, enhanced magnetoresistance (MR) with room temperature range at a low magnetic field of 1 T can be regulated by LSMO/NiO heterointerfaces. The mechanism of artificial electronic phase separation formed by LSMO/NiO heterointerfaces was proposed to explain the enhanced room temperature MR effect. This study provides an effective way to regulate the functional properties of oxides nanocomposite thin films by utilizing heterointerfaces.
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Acknowledgements
This work has been supported by the National Natural Science Foundation of China (Grant No. 52102103), Liaoning Natural Science Foundation (Grant No. 2021-BS-091), Liaoning Province Department of Education Foundation (Grant No. LQN202012, LJKZ0100, LJC201914).
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YW: conceptualization, methodology, writing—original draft, writing—review and editing. JL: investigation, data curation, writing—review and editing. CL: methodology, data curation. SW: investigation, data curation.
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Wu, Y., Lin, J., Li, C. et al. Effect of heterointerfaces on the magnetic and electrical properties of (La0.7Sr0.3MnO3)0.5:NiO0.5 nanocomposite thin films. Appl. Phys. A 129, 190 (2023). https://doi.org/10.1007/s00339-023-06475-7
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DOI: https://doi.org/10.1007/s00339-023-06475-7