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首页> 外文期刊>ACS applied materials & interfaces >Microstructure, Magnetic, and Magnetoresistance Properties of La0.7Sr0.3MnO3:CuO Nanocomposite Thin Films
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Microstructure, Magnetic, and Magnetoresistance Properties of La0.7Sr0.3MnO3:CuO Nanocomposite Thin Films

机译:LA0.7SR0.3MNO3:CuO纳米复合薄膜的微观结构,磁性和磁阻性能

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摘要

(La0.7Sr0.3MnO3)(0.67):(CuO)(0.33) (LSMO:CuO) nanocomposite thin films were deposited on SrTiO3 (001), LaAlO3 (001), and MgO (001) substrates by pulsed laser deposition, and their microstructure as well as magnetic and magnetoresistance properties were investigated. X-ray diffraction (XRD) and transmission electron microscopy (TEM) results show that LSMO:CuO films grow as highly textured self-assembled vertically aligned nanocomposite (VAN), with a systematic domain structure and strain tuning effect based on the substrate type and laser deposition frequency. A record high low-field magnetoresistance (LFMR) value of similar to 80% has been achieved in LSMO:CuO grown on LaAlO3 (001) substrate under high frequency. Detailed analysis indicates that both the strain state and the phase boundary effect play a significant role in governing the overall LFMR behavior.
机译:(LA0.7SR0.3MNO3)(0.67):( CUO)(0.33)(LSMO:CUO)纳米复合薄膜通过脉冲激光沉积沉积在SRTIO3(001),LAALO3(001)和MgO(001)基板上沉积纳米复合薄膜, 研究了它们的微观结构以及磁性和磁阻性能。 X射线衍射(XRD)和透射电子显微镜(TEM)结果表明,LSMO:CuO薄膜以高度纹理的自组装垂直对齐的纳米复合材料(VAN),基于基材类型和基于基材类型的系统结构域结构和应变调谐效果 激光沉积频率。 在LSMO中实现了类似于80%的历史记录的高低磁场磁阻(LFMR)值:在高频下在Laalo3(001)衬底上生长的CUO。 详细分析表明应变状态和相位边界效应都在控制整体LFMR行为方面发挥着重要作用。

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