Tuning the magnetotransport properties of epitaxial Sm0.5Ca0.25Sr0.25MnO3 thin films via strain engineering

Journal of Magnetism and Magnetic Materials（2020）

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摘要

•SCSMO films grew epitaxially with out-of-plane compressive strain (σ) in [101] direction.•Magnetoresistance (MR) increases about 10 times (at 120 K) with reduction of the strain.•Enhancement of MR explained in terms of Small Polaron Hopping model.•Strain induced probable changes in lattice structure leads to such enhancement in MR.

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关键词

Epitaxial strain,Magnetoresistance,Electrical resistivity,Small polaron hopping,Activation energy

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