Enhanced low field magnetoresistance in nanocrystalline La0.7Sr0.3MnO3 synthesized on MgO nanowires

• Main Authors: Zhang, Zhen, Ranjith, R., Xie, B. T., You, L., Wong, Lai Mun, Wang, Shijie, Wang, Junling, Prellier, Wilfrid, Zhao, Y. G., Wu, Tom
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2011
• Subjects: DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films; DRNTU::Engineering::Materials::Magnetic materials
• Online Access: https://hdl.handle.net/10356/94263; http://hdl.handle.net/10220/6852
• Institution: Nanyang Technological University

We report on the structure and transport properties of nanocrystalline manganite La0.7Sr0.3MnO3 (LSMO) synthesized on nanowires-engineered MgO substrates by pulsed laser deposition, which is compared with reference samples deposited directly on flat MgO substrates. Such LSMO/MgO nanocomposites show enhanced low field magnetoresistance, especially at low temperature, due to the dominant spin-polarized intergrain tunneling. This work suggests that growing on nanoengineered substrates is a viable route to achieve nanostructured materials with desired crystalline structure and physical properties.