http://hdl.handle.net/20.500.12128/239
Title: | Formation of Fe and Ni substituted LiMn2-XMXO4 nanopowders and their crystal and electronic structure and magnetic properties |
Authors: | Talik, Ewa Lipińska, Ludwika Guzik, Adam Zajdel, Paweł Michalska, Monika Szubka, Magdalena Kądziołka-Gaweł, Mariola Paul, Rick L. |
Keywords: | lithium manganese nickel oxides; nanomaterials; spinel |
Issue Date: | 2017 |
Citation: | Materials Science Poland, (2017), iss. 1, s. 159-172 |
Abstract: | The Pechini sol-gel method was applied to obtain LiMn2-xTxO4 (T = Ni, Fe; x = 0.1 to 0.5) nanopowders. Crystal and electronic structures, chemical composition and magnetic properties of the materials were characterized by X-ray diffraction, XPS, SEM/EDX microscopy, prompt gamma-ray activation analysis (PGAA), Mössbauer spectroscopy and magnetic susceptibility, respectively. XRD measurements showed that the LiMn2-xNixO4 were single phase for x = 0.1 and 0.2. Three samples with higher Ni content contained some addition of a second phase. Analysis of the oxidation state of the dopants by XPS revealed ionic Ni2+ and Fe3+. Mössbauer spectroscopy also confirmed 3+ oxidation state of iron and its location in octahedral sites, which excluded the inverse spinel configuration. XPS examinations showed that Mn3+ ions dominated in the iron substituted series whereas the Mn4+ was dominant in the nickel series |
URI: | http://hdl.handle.net/20.500.12128/239 |
DOI: | 10.1515/msp-2017-0014 |
ISSN: | 2083-1331 |
Appears in Collections: | Artykuły (WNŚiT) |
File | Description | Size | Format | |
---|---|---|---|---|
Talik_Formation_of_Fe_and_Ni_substituted_LiMn2-XMXO4_nanopowders_and_their_crystal.pdf | 2,86 MB | Adobe PDF | View/Open |
Uznanie autorstwa - użycie niekomercyjne, bez utworów zależnych 3.0 Polska Creative Commons License