Mn Valence, Magnetic, and Electrical Properties of LaMnO3+δ Nanofibers by Electrospinning
Source abstract
Abstract
LaMnO3+δ nanofibers have been prepared by electrospinning. The nearly 70% of Mn atoms is Mn4+, which is much higher than that in the nanoparticles. The average grain size of our fibers is approximately 20 nm, which is the critical size producing the nanoscale effect. The nanofibers exhibit a very broad magnetic transition with Tc≈255 K, and the Tc onset is around 310 K. The blocking temperature TB is 180 K. The sample shows weak ferromagnetic property above the TB and below Tc and superparamagnetic property near the Tc onset. The resistivity measurements show a metal-insulator transition near 210 K and an upturn at about 45 K.
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Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Magnetic and transport properties of perovskites and related materials · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China, School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China, and School of Biological Engineering, Changchun University of Technology, Changchun 130012, China
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