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Dr. Usama Mohamed Nour Eldemerdash :: Publications:

Title:
Room temperature ferromagnetism in Ag doped LaMnO3 nanoparticles
Authors: Usama Eldemerdash
Year: 2021
Keywords: Nanoparticles, Manganites, Perovskite, Magnetization, Ag
Journal: Journal of Alloys and Compounds
Volume: 861
Issue: Not Available
Pages: 11
Publisher: Elsevier
Local/International: International
Paper Link:
Full paper Usama Mohamed Nour Eldemerdash_1st page-1-s2.0-S0925838820349331-main.pdf
Supplementary materials Not Available
Abstract:

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 Rc. 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 (Tc ≈ 270 K). The shift of the Curie point to larger values was clearly observed for the samples by increasing the silver contents.

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