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Title: Electronic structure and magnetic properties of LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanocrystalline electrode materials

Abstract

The process of sol–gel synthesis was applied to obtain LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanopowders. The samples were characterized by following methods: X-ray diffraction (XRD), scanning electron microscopy (SEM/EDX), X-ray photoelectron spectroscopy (XPS) and SQUID magnetometry. XPS was used to examine the chemical composition and oxidation state of manganese, in particular the Mn{sup 3+}/Mn{sup 4+} ratio from the deconvolution of the complex Mn3p lines. The size of the grains and crystallites were independently obtained from SEM images and XRD patterns, respectively. In all the cases a critical interplay of electronic (Mn{sup 3+}/Mn{sup 4+} ratio), structural (unit cell volume) and magnetic properties was observed depending on the synthesis process. - Graphical abstract: SEM image of Li{sub 0.79}Ni{sub 0.41}Mn{sub 1.35}O{sub 4.45} sample. Display Omitted - Highlights: • LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} obtained by sol–gel method. • XRD method was used to determine the crystal structure. • SEM/EDX imaging have been done. • XPS electronic structure was examined and discussed. • Experimental effective magnetic moment and the calculated one were compared.

Authors:
 [1];  [2];  [2];  [1];  [2]
  1. Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa (Poland)
  2. Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland)
Publication Date:
OSTI Identifier:
22274130
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 206; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CRYSTAL STRUCTURE; CRYSTALS; ELECTRODES; ELECTRONIC STRUCTURE; MAGNETIC MOMENTS; MAGNETIC SUSCEPTIBILITY; MANGANESE; MANGANESE IONS; SCANNING ELECTRON MICROSCOPY; SPINELS; SYNTHESIS; TITANIUM OXIDES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Talik, E., E-mail: talik@us.edu.pl, Lipińska, L., Zajdel, P., Załóg, A., Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Michalska, M., and Guzik, A. Electronic structure and magnetic properties of LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanocrystalline electrode materials. United States: N. p., 2013. Web. doi:10.1016/J.JSSC.2013.08.006.
Talik, E., E-mail: talik@us.edu.pl, Lipińska, L., Zajdel, P., Załóg, A., Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Michalska, M., & Guzik, A. Electronic structure and magnetic properties of LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanocrystalline electrode materials. United States. https://doi.org/10.1016/J.JSSC.2013.08.006
Talik, E., E-mail: talik@us.edu.pl, Lipińska, L., Zajdel, P., Załóg, A., Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Michalska, M., and Guzik, A. 2013. "Electronic structure and magnetic properties of LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanocrystalline electrode materials". United States. https://doi.org/10.1016/J.JSSC.2013.08.006.
@article{osti_22274130,
title = {Electronic structure and magnetic properties of LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanocrystalline electrode materials},
author = {Talik, E., E-mail: talik@us.edu.pl and Lipińska, L. and Zajdel, P. and Załóg, A. and Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa and Michalska, M. and Guzik, A.},
abstractNote = {The process of sol–gel synthesis was applied to obtain LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} nanopowders. The samples were characterized by following methods: X-ray diffraction (XRD), scanning electron microscopy (SEM/EDX), X-ray photoelectron spectroscopy (XPS) and SQUID magnetometry. XPS was used to examine the chemical composition and oxidation state of manganese, in particular the Mn{sup 3+}/Mn{sup 4+} ratio from the deconvolution of the complex Mn3p lines. The size of the grains and crystallites were independently obtained from SEM images and XRD patterns, respectively. In all the cases a critical interplay of electronic (Mn{sup 3+}/Mn{sup 4+} ratio), structural (unit cell volume) and magnetic properties was observed depending on the synthesis process. - Graphical abstract: SEM image of Li{sub 0.79}Ni{sub 0.41}Mn{sub 1.35}O{sub 4.45} sample. Display Omitted - Highlights: • LiMn{sub 1.5}M{sub 0.5}O{sub 4} (M=Al, Mg, Ni, Fe) and LiMn{sub 2}O{sub 4}/TiO{sub 2} obtained by sol–gel method. • XRD method was used to determine the crystal structure. • SEM/EDX imaging have been done. • XPS electronic structure was examined and discussed. • Experimental effective magnetic moment and the calculated one were compared.},
doi = {10.1016/J.JSSC.2013.08.006},
url = {https://www.osti.gov/biblio/22274130}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 206,
place = {United States},
year = {Tue Oct 15 00:00:00 EDT 2013},
month = {Tue Oct 15 00:00:00 EDT 2013}
}