Impact of La3+ doping on temperature coefficient of resistivity and peak temperature of La x Ca0.89-xSr0.11MnO3 films prepared by sol-gel spin coating method

Xin Gu,Shuaizhao Jin,Zhiyuan Yu,Xiaokun Zhu,Kaikai Wu,Liming Zhao,Yixin Yan,Qingming Chen,Xiang Liu

Thin Solid Films（2023）

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摘要

•LaxCa0.89-xSr0.11MnO3 films were prepared by sol-gel spin coating method.•Film exhibited temperature coefficient of resistivity (TCR) of 8.8%/K at 283.2 K.•La3+ doping is helpful to control peak TCR temperature at room temperature.•Films displayed smooth and uniform surface with average roughness of 1–4 nm.•The results are beneficial for uncooling infrared bolometer application.

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关键词

Lantanum calcium strontium manganite, Thin film, Strontium titanate, Sol-gel spin-coating, Electrical transport properties, Surface morphology

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