Room temperature ferromagnetism in Ag doped LaMnO3 nanoparticles

Manganite containing La is a promising perovskite material as it has wide range of applications. In this piece of work, nanoparticles of La1-xAgxMnO3 samples (0.00 <= x <= 0.09) were synthesized using wet chemical method. The samples were characterized by thermal gravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM), differential thermal analysis (DTA), high-resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), infrared spectroscopic (FT-IR), and differential scanning calorimetry (DSC). The XRD study showed that all samples adopted the rhombohedral hexagonal structure with a space group of R (3) over barc. The HR-TEM/FE-SEM images showed that the perovskite structure were successfully obtained. Investigation of the magnetic properties was conducted in a wide range of temperature to confirm the ferromagnetic-paramagnetic (FM-PM) presence around Curie temperature (T-c approximate to 270K). The shift of the Curie point to larger values was clearly observed for the samples by increasing the silver contents. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

In this study, La1-xAgxMnO3 nanoparticles were synthesized using a wet chemical method, and characterized by a variety of analytical techniques. The results confirmed the successful formation of the perovskite structure, with the shift of the Curie point to higher values with increasing silver content.